Upozornění, Hodiny a Varování NOAA SWPC
National Oceanic and Atmospheric Administration Space Weather Foreiction Center (NOAA SWPC) je oficiální vládní agentura pro vesmírné počasí ze Spojených států, která poskytuje výstrahy, časy a varování před rušivým vesmírním počasím. Níže naleznete nejnovější výstrahy, časy a varování vydané vesmírným počasím vydané SWPC NOAA.
pondělí 13. ledna 2025
01:24 UTC
Space Weather Message Code: ALTK04
Serial Number: 2518
Issue Time: 2025 Jan 13 0124 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 13 0122 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
01:06 UTC
Space Weather Message Code: WARK04
Serial Number: 4803
Issue Time: 2025 Jan 13 0106 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 13 0105 UTC
Valid To: 2025 Jan 13 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
pátek 10. ledna 2025
22:48 UTC
Space Weather Message Code: ALTK04
Serial Number: 2517
Issue Time: 2025 Jan 10 2248 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 10 2247 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
22:46 UTC
Space Weather Message Code: WARK04
Serial Number: 4802
Issue Time: 2025 Jan 10 2246 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 10 2245 UTC
Valid To: 2025 Jan 10 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
04:08 UTC
Space Weather Message Code: WARK04
Serial Number: 4801
Issue Time: 2025 Jan 10 0408 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 10 0408 UTC
Valid To: 2025 Jan 10 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
čtvrtek 9. ledna 2025
14:19 UTC
Space Weather Message Code: ALTK04
Serial Number: 2516
Issue Time: 2025 Jan 09 1419 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 09 1407 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:24 UTC
Space Weather Message Code: WARK04
Serial Number: 4800
Issue Time: 2025 Jan 09 1324 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 09 1325 UTC
Valid To: 2025 Jan 09 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:52 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3413
Issue Time: 2025 Jan 09 1052 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3412
Begin Time: 2025 Jan 06 1430 UTC
Yesterday Maximum 2MeV Flux: 1555 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
středa 8. ledna 2025
12:45 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3412
Issue Time: 2025 Jan 08 1245 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3411
Begin Time: 2025 Jan 06 1430 UTC
Yesterday Maximum 2MeV Flux: 3074 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
02:37 UTC
Space Weather Message Code: ALTK04
Serial Number: 2515
Issue Time: 2025 Jan 08 0237 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 08 0237 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:21 UTC
Space Weather Message Code: WARK04
Serial Number: 4799
Issue Time: 2025 Jan 08 0221 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 08 0220 UTC
Valid To: 2025 Jan 08 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
úterý 7. ledna 2025
16:40 UTC
Space Weather Message Code: WARK04
Serial Number: 4798
Issue Time: 2025 Jan 07 1640 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 07 1639 UTC
Valid To: 2025 Jan 07 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:52 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3411
Issue Time: 2025 Jan 07 1152 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3410
Begin Time: 2025 Jan 06 1430 UTC
Yesterday Maximum 2MeV Flux: 1508 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
pondělí 6. ledna 2025
17:05 UTC
Space Weather Message Code: ALTTP4
Serial Number: 676
Issue Time: 2025 Jan 06 1705 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Jan 06 1628 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
16:51 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1389
Issue Time: 2025 Jan 06 1651 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Jan 06 1621 UTC
Estimated Velocity: 445 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
14:42 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3410
Issue Time: 2025 Jan 06 1442 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Jan 06 1430 UTC
Station: GOES-16
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
05:59 UTC
Space Weather Message Code: ALTK04
Serial Number: 2514
Issue Time: 2025 Jan 06 0559 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 06 0558 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:03 UTC
Space Weather Message Code: WARK04
Serial Number: 4797
Issue Time: 2025 Jan 06 0503 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 06 0503 UTC
Valid To: 2025 Jan 06 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
neděle 5. ledna 2025
22:22 UTC
Space Weather Message Code: SUMPX1
Serial Number: 120
Issue Time: 2025 Jan 05 2222 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2025 Jan 04 2235 UTC
Maximum Time: 2025 Jan 05 0055 UTC
End Time: 2025 Jan 05 0940 UTC
Maximum 10MeV Flux: 20 pfu
NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
17:38 UTC
Space Weather Message Code: WATA20
Serial Number: 1023
Issue Time: 2025 Jan 05 1738 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jan 06: G1 (Minor) Jan 07: None (Below G1) Jan 08: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Two CMEs that originated from or near AR 3939 left the Sun on 04 Jan. Modeling of these events suggest a glancing blow to Earth is possible by late on 06 Jan.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:55 UTC
Space Weather Message Code: WARPX1
Serial Number: 592
Issue Time: 2025 Jan 05 1155 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 591
Valid From: 2025 Jan 04 2140 UTC
Now Valid Until: 2025 Jan 05 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
11:48 UTC
Space Weather Message Code: WARK04
Serial Number: 4796
Issue Time: 2025 Jan 05 1148 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4795
Valid From: 2025 Jan 04 0244 UTC
Now Valid Until: 2025 Jan 05 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
sobota 4. ledna 2025
22:52 UTC
Space Weather Message Code: ALTPX1
Serial Number: 355
Issue Time: 2025 Jan 04 2252 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2025 Jan 04 2235 UTC
NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
22:13 UTC
Space Weather Message Code: WARK05
Serial Number: 1966
Issue Time: 2025 Jan 04 2213 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1965
Valid From: 2025 Jan 04 0525 UTC
Now Valid Until: 2025 Jan 05 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:13 UTC
Space Weather Message Code: WARK04
Serial Number: 4795
Issue Time: 2025 Jan 04 2213 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4794
Valid From: 2025 Jan 04 0244 UTC
Now Valid Until: 2025 Jan 05 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:43 UTC
Space Weather Message Code: WARPX1
Serial Number: 591
Issue Time: 2025 Jan 04 2143 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2025 Jan 04 2140 UTC
Valid To: 2025 Jan 05 1200 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
19:47 UTC
Space Weather Message Code: ALTK05
Serial Number: 1692
Issue Time: 2025 Jan 04 1947 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 04 1940 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18:07 UTC
Space Weather Message Code: ALTK05
Serial Number: 1691
Issue Time: 2025 Jan 04 1807 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 04 1759 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:04 UTC
Space Weather Message Code: ALTTP4
Serial Number: 675
Issue Time: 2025 Jan 04 1704 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Jan 04 1444 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
14:22 UTC
Space Weather Message Code: WARK05
Serial Number: 1965
Issue Time: 2025 Jan 04 1422 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1964
Valid From: 2025 Jan 04 0525 UTC
Now Valid Until: 2025 Jan 04 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
13:31 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1388
Issue Time: 2025 Jan 04 1331 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Jan 04 1252 UTC
Estimated Velocity: 314 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
13:01 UTC
Space Weather Message Code: SUMX01
Serial Number: 188
Issue Time: 2025 Jan 04 1301 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Jan 04 1234 UTC
Maximum Time: 2025 Jan 04 1248 UTC
End Time: 2025 Jan 04 1256 UTC
X-ray Class: X1.8
Location: N13E47
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
12:45 UTC
Space Weather Message Code: ALTXMF
Serial Number: 467
Issue Time: 2025 Jan 04 1245 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 04 1243 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
08:18 UTC
Space Weather Message Code: WARK06
Serial Number: 559
Issue Time: 2025 Jan 04 0818 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Jan 04 0818 UTC
Valid To: 2025 Jan 04 1200 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
07:54 UTC
Space Weather Message Code: ALTK05
Serial Number: 1690
Issue Time: 2025 Jan 04 0754 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 04 0749 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:50 UTC
Space Weather Message Code: ALTK05
Serial Number: 1689
Issue Time: 2025 Jan 04 0550 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 04 0547 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:34 UTC
Space Weather Message Code: SUMXM5
Serial Number: 279
Issue Time: 2025 Jan 04 0534 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Jan 04 0458 UTC
Maximum Time: 2025 Jan 04 0518 UTC
End Time: 2025 Jan 04 0527 UTC
X-ray Class: M7.6
Location: N13E47
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
05:23 UTC
Space Weather Message Code: WARK05
Serial Number: 1964
Issue Time: 2025 Jan 04 0523 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Jan 04 0525 UTC
Valid To: 2025 Jan 04 1500 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:15 UTC
Space Weather Message Code: ALTXMF
Serial Number: 466
Issue Time: 2025 Jan 04 0515 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 04 0514 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
05:14 UTC
Space Weather Message Code: ALTK04
Serial Number: 2513
Issue Time: 2025 Jan 04 0514 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 04 0509 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
03:09 UTC
Space Weather Message Code: WARSUD
Serial Number: 240
Issue Time: 2025 Jan 04 0309 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2025 Jan 04 0300 UTC
Valid To: 2025 Jan 04 0400 UTC
IP Shock Passage Observed: 2025 Jan 04 0211 UTC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
02:44 UTC
Space Weather Message Code: WARK04
Serial Number: 4794
Issue Time: 2025 Jan 04 0244 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 04 0244 UTC
Valid To: 2025 Jan 04 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:17 UTC
Space Weather Message Code: SUMXM5
Serial Number: 278
Issue Time: 2025 Jan 04 0017 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Jan 03 2350 UTC
Maximum Time: 2025 Jan 03 2356 UTC
End Time: 2025 Jan 04 0005 UTC
X-ray Class: M5.9
Optical Class: 1n
Location: N11E57
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
pátek 3. ledna 2025
23:57 UTC
Space Weather Message Code: ALTXMF
Serial Number: 465
Issue Time: 2025 Jan 03 2357 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 03 2356 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
23:21 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1387
Issue Time: 2025 Jan 03 2321 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Jan 03 2244 UTC
Estimated Velocity: 465 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
23:05 UTC
Space Weather Message Code: SUMX01
Serial Number: 187
Issue Time: 2025 Jan 03 2305 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Jan 03 2232 UTC
Maximum Time: 2025 Jan 03 2241 UTC
End Time: 2025 Jan 03 2251 UTC
X-ray Class: X1.1
Location: N11E57
NOAA Scale: R3 - Strong
Comment: Proton Prediction Model resulted in a 3% chance for 10 MeV Protons to exceed threshold beginning about 13 hours from maximum time.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
22:41 UTC
Space Weather Message Code: ALTXMF
Serial Number: 464
Issue Time: 2025 Jan 03 2241 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 03 2241 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
12:00 UTC
Space Weather Message Code: SUMX01
Serial Number: 186
Issue Time: 2025 Jan 03 1200 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Jan 03 1129 UTC
Maximum Time: 2025 Jan 03 1139 UTC
End Time: 2025 Jan 03 1149 UTC
X-ray Class: X1.2
Location: N13E58
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
11:39 UTC
Space Weather Message Code: ALTXMF
Serial Number: 463
Issue Time: 2025 Jan 03 1139 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 03 1136 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
02:24 UTC
Space Weather Message Code: WARK04
Serial Number: 4793
Issue Time: 2025 Jan 03 0224 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4792
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 03 1200 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
čtvrtek 2. ledna 2025
22:35 UTC
Space Weather Message Code: WATA20
Serial Number: 1022
Issue Time: 2025 Jan 02 2235 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jan 03: None (Below G1) Jan 04: G1 (Minor) Jan 05: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:35 UTC
Space Weather Message Code: WARK04
Serial Number: 4792
Issue Time: 2025 Jan 02 2035 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4791
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 03 0300 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:25 UTC
Space Weather Message Code: WARK04
Serial Number: 4791
Issue Time: 2025 Jan 02 1025 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4790
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 02 2100 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:25 UTC
Space Weather Message Code: ALTK05
Serial Number: 1688
Issue Time: 2025 Jan 02 1025 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 02 1025 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
10:20 UTC
Space Weather Message Code: WARK05
Serial Number: 1963
Issue Time: 2025 Jan 02 1020 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Jan 02 1020 UTC
Valid To: 2025 Jan 02 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
středa 1. ledna 2025
21:10 UTC
Space Weather Message Code: ALTK07
Serial Number: 180
Issue Time: 2025 Jan 01 2110 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2025 Jan 01 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
18:28 UTC
Space Weather Message Code: ALTK06
Serial Number: 614
Issue Time: 2025 Jan 01 1828 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Jan 01 1826 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:11 UTC
Space Weather Message Code: ALTK05
Serial Number: 1687
Issue Time: 2025 Jan 01 1811 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 1805 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18:02 UTC
Space Weather Message Code: WARK06
Serial Number: 558
Issue Time: 2025 Jan 01 1802 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 557
Valid From: 2025 Jan 01 0950 UTC
Now Valid Until: 2025 Jan 02 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:02 UTC
Space Weather Message Code: WARK07
Serial Number: 123
Issue Time: 2025 Jan 01 1802 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 122
Valid From: 2025 Jan 01 1124 UTC
Now Valid Until: 2025 Jan 02 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
18:02 UTC
Space Weather Message Code: WARK04
Serial Number: 4790
Issue Time: 2025 Jan 01 1802 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4789
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 02 1200 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
18:02 UTC
Space Weather Message Code: WARK05
Serial Number: 1962
Issue Time: 2025 Jan 01 1802 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1961
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 02 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:47 UTC
Space Weather Message Code: ALTK08
Serial Number: 49
Issue Time: 2025 Jan 01 1747 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2025 Jan 01 1741 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
17:43 UTC
Space Weather Message Code: ALTK07
Serial Number: 179
Issue Time: 2025 Jan 01 1743 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2025 Jan 01 1736 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
16:30 UTC
Space Weather Message Code: ALTK06
Serial Number: 613
Issue Time: 2025 Jan 01 1630 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Jan 01 1623 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
15:46 UTC
Space Weather Message Code: ALTK05
Serial Number: 1686
Issue Time: 2025 Jan 01 1546 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 1541 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:18 UTC
Space Weather Message Code: WARK04
Serial Number: 4789
Issue Time: 2025 Jan 01 1418 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4788
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 01 2359 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
14:10 UTC
Space Weather Message Code: ALTK07
Serial Number: 178
Issue Time: 2025 Jan 01 1410 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2025 Jan 01 1405 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
13:37 UTC
Space Weather Message Code: WARK06
Serial Number: 557
Issue Time: 2025 Jan 01 1337 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 556
Valid From: 2025 Jan 01 0950 UTC
Now Valid Until: 2025 Jan 01 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
13:37 UTC
Space Weather Message Code: WARK05
Serial Number: 1961
Issue Time: 2025 Jan 01 1337 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1960
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 01 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
13:37 UTC
Space Weather Message Code: WARK07
Serial Number: 122
Issue Time: 2025 Jan 01 1337 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 121
Valid From: 2025 Jan 01 1124 UTC
Now Valid Until: 2025 Jan 01 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
13:05 UTC
Space Weather Message Code: ALTK06
Serial Number: 612
Issue Time: 2025 Jan 01 1305 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Jan 01 1305 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
12:52 UTC
Space Weather Message Code: ALTK05
Serial Number: 1685
Issue Time: 2025 Jan 01 1252 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 1252 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:24 UTC
Space Weather Message Code: WARK07
Serial Number: 121
Issue Time: 2025 Jan 01 1124 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2025 Jan 01 1124 UTC
Valid To: 2025 Jan 01 1500 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
10:44 UTC
Space Weather Message Code: ALTK06
Serial Number: 611
Issue Time: 2025 Jan 01 1044 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Jan 01 1044 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
09:50 UTC
Space Weather Message Code: WARK06
Serial Number: 556
Issue Time: 2025 Jan 01 0950 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Jan 01 0950 UTC
Valid To: 2025 Jan 01 1500 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
09:46 UTC
Space Weather Message Code: ALTK05
Serial Number: 1684
Issue Time: 2025 Jan 01 0946 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 0945 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:53 UTC
Space Weather Message Code: ALTK05
Serial Number: 1683
Issue Time: 2025 Jan 01 0853 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 0853 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4788
Issue Time: 2025 Jan 01 0554 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4787
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 01 1800 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:54 UTC
Space Weather Message Code: WARK05
Serial Number: 1960
Issue Time: 2025 Jan 01 0554 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1959
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 01 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
04:58 UTC
Space Weather Message Code: ALTK05
Serial Number: 1682
Issue Time: 2025 Jan 01 0458 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Jan 01 0458 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
úterý 31. prosince 2024
23:06 UTC
Space Weather Message Code: WARK05
Serial Number: 1959
Issue Time: 2024 Dec 31 2306 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1958
Valid From: 2024 Dec 31 1615 UTC
Now Valid Until: 2025 Jan 01 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:46 UTC
Space Weather Message Code: SUMSUD
Serial Number: 284
Issue Time: 2024 Dec 31 1746 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Dec 31 1621 UTC
Deviation: 17 nT
Station: Boulder
Comment: This is a correction to the previous Summary message that had an incorrect SI time at Earth.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
17:13 UTC
Space Weather Message Code: SUMSUD
Serial Number: 283
Issue Time: 2024 Dec 31 1713 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Dec 31 1555 UTC
Deviation: 17 nT
Station: Boulder
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
16:56 UTC
Space Weather Message Code: ALTK04
Serial Number: 2512
Issue Time: 2024 Dec 31 1656 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 31 1654 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:14 UTC
Space Weather Message Code: WARK05
Serial Number: 1958
Issue Time: 2024 Dec 31 1614 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Dec 31 1615 UTC
Valid To: 2024 Dec 31 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:14 UTC
Space Weather Message Code: WARK04
Serial Number: 4787
Issue Time: 2024 Dec 31 1614 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 31 1615 UTC
Valid To: 2025 Jan 01 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:08 UTC
Space Weather Message Code: WARSUD
Serial Number: 239
Issue Time: 2024 Dec 31 1608 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024 Dec 31 1650 UTC
Valid To: 2024 Dec 31 1720 UTC
IP Shock Passage Observed: 2024 Dec 31 1555 UTC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
pondělí 30. prosince 2024
17:27 UTC
Space Weather Message Code: SUMXM5
Serial Number: 277
Issue Time: 2024 Dec 30 1727 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 30 1645 UTC
Maximum Time: 2024 Dec 30 1654 UTC
End Time: 2025 Dec 30 1701 UTC
X-ray Class: M5.0
Optical Class: 1n
Location: N11W52
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
16:55 UTC
Space Weather Message Code: ALTXMF
Serial Number: 462
Issue Time: 2024 Dec 30 1655 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 30 1654 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
05:12 UTC
Space Weather Message Code: SUMX01
Serial Number: 185
Issue Time: 2024 Dec 30 0512 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Dec 30 0429 UTC
Maximum Time: 2024 Dec 30 0431 UTC
End Time: 2024 Dec 30 0434 UTC
X-ray Class: X1.1
Location: S19W50
NOAA Scale: R3 - Strong
Comment: No initial Alert issued as X1.5 flare from Region 3936 was ongoing.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
04:52 UTC
Space Weather Message Code: SUMX01
Serial Number: 184
Issue Time: 2024 Dec 30 0452 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Dec 30 0401 UTC
Maximum Time: 2024 Dec 30 0414 UTC
End Time: 2024 Dec 30 0428 UTC
X-ray Class: X1.5
Optical Class: 2n
Location: N12W51
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
04:48 UTC
Space Weather Message Code: SUM10R
Serial Number: 856
Issue Time: 2024 Dec 30 0448 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 30 0429 UTC
Maximum Time: 2024 Dec 30 0429 UTC
End Time: 2024 Dec 30 0431 UTC
Duration: 2 minutes
Peak Flux: 430 sfu
Latest Penticton Noon Flux: 255 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
04:29 UTC
Space Weather Message Code: SUM10R
Serial Number: 855
Issue Time: 2024 Dec 30 0429 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 30 0408 UTC
Maximum Time: 2024 Dec 30 0410 UTC
End Time: 2024 Dec 30 0415 UTC
Duration: 7 minutes
Peak Flux: 1000 sfu
Latest Penticton Noon Flux: 255 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
04:16 UTC
Space Weather Message Code: ALTXMF
Serial Number: 461
Issue Time: 2024 Dec 30 0416 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 30 0410 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
neděle 29. prosince 2024
20:00 UTC
Space Weather Message Code: WATA50
Serial Number: 84
Issue Time: 2024 Dec 29 2000 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Dec 30: None (Below G1) Dec 31: G3 (Strong) Jan 01: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Isolated periods of strong geomagnetic storming are likely on 31 Dec due to CME effects. Lingering effects will likely wane to minor storming levels over the course of 01 Jan.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
15:36 UTC
Space Weather Message Code: SUMXM5
Serial Number: 276
Issue Time: 2024 Dec 29 1536 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 29 1502 UTC
Maximum Time: 2024 Dec 29 1509 UTC
End Time: 2024 Dec 29 1524 UTC
X-ray Class: M7.1
Location: N12W38
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
15:11 UTC
Space Weather Message Code: ALTXMF
Serial Number: 460
Issue Time: 2024 Dec 29 1511 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 29 1507 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
07:41 UTC
Space Weather Message Code: SUMX01
Serial Number: 183
Issue Time: 2024 Dec 29 0741 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Dec 29 0708 UTC
Maximum Time: 2024 Dec 29 0718 UTC
End Time: 2024 Dec 29 0734 UTC
X-ray Class: X1.1
Location: N10W33
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
07:17 UTC
Space Weather Message Code: ALTXMF
Serial Number: 459
Issue Time: 2024 Dec 29 0717 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 29 0714 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
06:50 UTC
Space Weather Message Code: ALTTP4
Serial Number: 674
Issue Time: 2024 Dec 29 0650 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Dec 29 0520 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
sobota 28. prosince 2024
11:30 UTC
Space Weather Message Code: SUM10R
Serial Number: 854
Issue Time: 2024 Dec 28 1130 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 28 1118 UTC
Maximum Time: 2024 Dec 28 1119 UTC
End Time: 2024 Dec 28 1120 UTC
Duration: 2 minutes
Peak Flux: 300 sfu
Latest Penticton Noon Flux: 259 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
čtvrtek 26. prosince 2024
03:32 UTC
Space Weather Message Code: SUMXM5
Serial Number: 275
Issue Time: 2024 Dec 26 0332 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 26 0252 UTC
Maximum Time: 2024 Dec 26 0315 UTC
End Time: 2024 Dec 26 0325 UTC
X-ray Class: M7.4
Location: N19E52
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
03:12 UTC
Space Weather Message Code: ALTXMF
Serial Number: 458
Issue Time: 2024 Dec 26 0312 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 26 0311 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
středa 25. prosince 2024
06:02 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1386
Issue Time: 2024 Dec 25 0602 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 25 0447 UTC
Estimated Velocity: 1064 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
úterý 24. prosince 2024
23:17 UTC
Space Weather Message Code: ALTK04
Serial Number: 2511
Issue Time: 2024 Dec 24 2317 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 24 2313 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:52 UTC
Space Weather Message Code: WARK04
Serial Number: 4786
Issue Time: 2024 Dec 24 2152 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 24 2150 UTC
Valid To: 2024 Dec 25 1500 UTC
Warning Condition: Onset
Comment: Correcting times of canceled K=4 warning
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:46 UTC
Space Weather Message Code: WARK04
Serial Number: 4785
Issue Time: 2024 Dec 24 2146 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 24 2200 UTC
Valid To: 2024 Dec 25 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:47 UTC
Space Weather Message Code: WATA20
Serial Number: 1021
Issue Time: 2024 Dec 24 1747 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 25: G1 (Minor) Dec 26: G1 (Minor) Dec 27: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
09:04 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1385
Issue Time: 2024 Dec 24 0904 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 24 0841 UTC
Estimated Velocity: 568 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
pondělí 23. prosince 2024
20:58 UTC
Space Weather Message Code: WATA20
Serial Number: 1020
Issue Time: 2024 Dec 23 2058 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 24: None (Below G1) Dec 25: G1 (Minor) Dec 26: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:23 UTC
Space Weather Message Code: WARK04
Serial Number: 4784
Issue Time: 2024 Dec 23 1723 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 23 1730 UTC
Valid To: 2024 Dec 23 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
15:38 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3409
Issue Time: 2024 Dec 23 1538 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Dec 23 1520 UTC
Station: GOES-16
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
11:41 UTC
Space Weather Message Code: SUMXM5
Serial Number: 274
Issue Time: 2024 Dec 23 1141 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 23 1106 UTC
Maximum Time: 2024 Dec 23 1112 UTC
End Time: 2024 Dec 23 1116 UTC
X-ray Class: M8.9
Location: S18E30
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
11:25 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1384
Issue Time: 2024 Dec 23 1125 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 23 1111 UTC
Estimated Velocity: 731 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
11:21 UTC
Space Weather Message Code: SUM10R
Serial Number: 853
Issue Time: 2024 Dec 23 1121 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 23 1109 UTC
Maximum Time: 2024 Dec 23 1109 UTC
End Time: 2024 Dec 23 1109 UTC
Duration: 1 minutes
Peak Flux: 320 sfu
Latest Penticton Noon Flux: 223 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
11:11 UTC
Space Weather Message Code: ALTXMF
Serial Number: 457
Issue Time: 2024 Dec 23 1111 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 23 1110 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
03:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2510
Issue Time: 2024 Dec 23 0301 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 23 0259 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
neděle 22. prosince 2024
23:02 UTC
Space Weather Message Code: WARK04
Serial Number: 4783
Issue Time: 2024 Dec 22 2302 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 22 2302 UTC
Valid To: 2024 Dec 23 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
sobota 21. prosince 2024
23:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4782
Issue Time: 2024 Dec 21 2354 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4781
Valid From: 2024 Dec 21 2059 UTC
Now Valid Until: 2024 Dec 22 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:02 UTC
Space Weather Message Code: ALTK04
Serial Number: 2509
Issue Time: 2024 Dec 21 2102 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 21 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:02 UTC
Space Weather Message Code: WARK04
Serial Number: 4781
Issue Time: 2024 Dec 21 2102 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 21 2059 UTC
Valid To: 2024 Dec 21 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:26 UTC
Space Weather Message Code: ALTTP4
Serial Number: 673
Issue Time: 2024 Dec 21 2026 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Dec 21 1942 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
20:26 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1383
Issue Time: 2024 Dec 21 2026 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 21 1939 UTC
Estimated Velocity: 1314 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
02:45 UTC
Space Weather Message Code: SUM10R
Serial Number: 852
Issue Time: 2024 Dec 21 0245 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 21 0037 UTC
Maximum Time: 2024 Dec 21 0038 UTC
End Time: 2024 Dec 21 0038 UTC
Duration: 1 minutes
Peak Flux: 229 sfu
Latest Penticton Noon Flux: 184 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
01:35 UTC
Space Weather Message Code: WARK04
Serial Number: 4780
Issue Time: 2024 Dec 21 0135 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 21 0133 UTC
Valid To: 2024 Dec 21 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
pátek 20. prosince 2024
11:29 UTC
Space Weather Message Code: SUM10R
Serial Number: 851
Issue Time: 2024 Dec 20 1129 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 20 1118 UTC
Maximum Time: 2024 Dec 20 1118 UTC
End Time: 2024 Dec 20 1118 UTC
Duration: 1 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 176 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
10:30 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1382
Issue Time: 2024 Dec 20 1030 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 20 1013 UTC
Estimated Velocity: 726 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
03:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2508
Issue Time: 2024 Dec 20 0301 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 20 0300 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:58 UTC
Space Weather Message Code: WARK04
Serial Number: 4779
Issue Time: 2024 Dec 20 0058 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 20 0057 UTC
Valid To: 2024 Dec 20 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
středa 18. prosince 2024
23:57 UTC
Space Weather Message Code: WARK04
Serial Number: 4778
Issue Time: 2024 Dec 18 2357 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4777
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 19 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4777
Issue Time: 2024 Dec 18 1755 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4776
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4776
Issue Time: 2024 Dec 18 1154 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4775
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4775
Issue Time: 2024 Dec 18 0554 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4774
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
úterý 17. prosince 2024
17:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4774
Issue Time: 2024 Dec 17 1754 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4773
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:54 UTC
Space Weather Message Code: WARK05
Serial Number: 1957
Issue Time: 2024 Dec 17 1754 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1956
Valid From: 2024 Dec 17 0411 UTC
Now Valid Until: 2024 Dec 17 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:51 UTC
Space Weather Message Code: WARK04
Serial Number: 4773
Issue Time: 2024 Dec 17 1151 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4772
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 17 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:51 UTC
Space Weather Message Code: WARK05
Serial Number: 1956
Issue Time: 2024 Dec 17 1151 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1955
Valid From: 2024 Dec 17 0411 UTC
Now Valid Until: 2024 Dec 17 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:07 UTC
Space Weather Message Code: ALTK05
Serial Number: 1681
Issue Time: 2024 Dec 17 0807 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Dec 17 0755 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:26 UTC
Space Weather Message Code: SUMSUD
Serial Number: 282
Issue Time: 2024 Dec 17 0526 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Dec 17 0519 UTC
Deviation: 24 nT
Station: Sitka
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
05:21 UTC
Space Weather Message Code: ALTK05
Serial Number: 1680
Issue Time: 2024 Dec 17 0521 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Dec 17 0518 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:03 UTC
Space Weather Message Code: WARK06
Serial Number: 555
Issue Time: 2024 Dec 17 0503 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Dec 17 0503 UTC
Valid To: 2024 Dec 17 1200 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
04:50 UTC
Space Weather Message Code: WARSUD
Serial Number: 238
Issue Time: 2024 Dec 17 0450 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024 Dec 17 0515 UTC
Valid To: 2024 Dec 17 0600 UTC
IP Shock Passage Observed: 2024 Dec 17 0445 UTC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
04:12 UTC
Space Weather Message Code: WARK05
Serial Number: 1955
Issue Time: 2024 Dec 17 0412 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Dec 17 0411 UTC
Valid To: 2024 Dec 17 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
pondělí 16. prosince 2024
23:41 UTC
Space Weather Message Code: WARK04
Serial Number: 4772
Issue Time: 2024 Dec 16 2341 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4771
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 17 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:59 UTC
Space Weather Message Code: ALTK04
Serial Number: 2507
Issue Time: 2024 Dec 16 2059 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 16 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
19:35 UTC
Space Weather Message Code: WARK04
Serial Number: 4771
Issue Time: 2024 Dec 16 1935 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 16 1935 UTC
Valid To: 2024 Dec 16 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
neděle 15. prosince 2024
17:07 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1381
Issue Time: 2024 Dec 15 1707 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 15 1427 UTC
Estimated Velocity: 320 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
sobota 14. prosince 2024
23:56 UTC
Space Weather Message Code: WARK04
Serial Number: 4770
Issue Time: 2024 Dec 14 2356 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4769
Valid From: 2024 Dec 14 1637 UTC
Now Valid Until: 2024 Dec 15 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:40 UTC
Space Weather Message Code: WARK04
Serial Number: 4769
Issue Time: 2024 Dec 14 1640 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 14 1637 UTC
Valid To: 2024 Dec 14 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Poslední zprávy
Sunspot region 3947, X-class solar flares
Two earth-directed coronal mass ejections
Strong G3 geoamagnetic storm watch issued
Nejnovější zprávy na fóru
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