Il Centro di Predizione Meteorologico Spaziale dell'Amministrazione Atmosferica e Oceanica Nazionale (SWPC della NOAA) è l'agenzia governativa meteorologica spaziale ufficiale degli Stati Uniti che fornisce allerte e avvisi per i disturbi meteorologici spaziali. Sotto troverete le ultime allerte e avvisi meteorologici spaziali emessi dal SWPC della NOAA.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
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.
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
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.
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.
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.
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.
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.
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.
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.
Space Weather Message Code: ALTEF3
Serial Number: 3408
Issue Time: 2024 Dec 12 1504 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Dec 12 1445 UTC
Station: GOES16
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Space Weather Message Code: SUMXM5
Serial Number: 273
Issue Time: 2024 Dec 11 1610 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 11 1532 UTC
Maximum Time: 2024 Dec 11 1549 UTC
End Time: 2024 Dec 11 1556 UTC
X-ray Class: M6.7
Location: S06W94
NOAA Scale: R2 - Moderate
Comment: Flare occurred from departed Region 3912.
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.
Space Weather Message Code: ALTXMF
Serial Number: 456
Issue Time: 2024 Dec 11 1550 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 11 1548 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.
Space Weather Message Code: SUMXM5
Serial Number: 272
Issue Time: 2024 Dec 10 0714 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 10 0636 UTC
Maximum Time: 2024 Dec 10 0648 UTC
End Time: 2024 Dec 10 0655 UTC
X-ray Class: M6.4
Optical Class: na
Location: S18W73
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.
Space Weather Message Code: ALTXMF
Serial Number: 455
Issue Time: 2024 Dec 10 0650 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 10 0647 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.
Space Weather Message Code: ALTK04
Serial Number: 2506
Issue Time: 2024 Dec 10 0002 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 09 2359 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.
Space Weather Message Code: WARK04
Serial Number: 4768
Issue Time: 2024 Dec 09 2218 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 09 2217 UTC
Valid To: 2024 Dec 10 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.
Space Weather Message Code: ALTK04
Serial Number: 2505
Issue Time: 2024 Dec 09 0216 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 09 0215 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.
Space Weather Message Code: WARK04
Serial Number: 4767
Issue Time: 2024 Dec 09 0131 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 09 0130 UTC
Valid To: 2024 Dec 09 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.
Space Weather Message Code: SUMX01
Serial Number: 182
Issue Time: 2024 Dec 08 0928 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Dec 08 0850 UTC
Maximum Time: 2024 Dec 08 0906 UTC
End Time: 2024 Dec 08 0910 UTC
X-ray Class: X2.2
Optical Class: 2b
Location: S06W60
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.
Space Weather Message Code: ALTTP2
Serial Number: 1380
Issue Time: 2024 Dec 08 0925 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 08 0905 UTC
Estimated Velocity: 626 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.
Space Weather Message Code: SUM10R
Serial Number: 850
Issue Time: 2024 Dec 08 0921 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 08 0903 UTC
Maximum Time: 2024 Dec 08 0904 UTC
End Time: 2024 Dec 08 0906 UTC
Duration: 3 minutes
Peak Flux: 870 sfu
Latest Penticton Noon Flux: 183 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.
Space Weather Message Code: ALTXMF
Serial Number: 454
Issue Time: 2024 Dec 08 0906 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 08 0905 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.
Space Weather Message Code: ALTTP2
Serial Number: 1379
Issue Time: 2024 Dec 05 1111 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 05 1040 UTC
Estimated Velocity: 456 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.
Space Weather Message Code: ALTTP2
Serial Number: 1378
Issue Time: 2024 Dec 04 1046 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Dec 04 1004 UTC
Estimated Velocity: 423 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.
Space Weather Message Code: WARK04
Serial Number: 4766
Issue Time: 2024 Dec 03 0855 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4765
Valid From: 2024 Dec 02 2321 UTC
Now Valid Until: 2024 Dec 03 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.
Space Weather Message Code: ALTK04
Serial Number: 2504
Issue Time: 2024 Dec 03 0309 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 03 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.
Space Weather Message Code: WARK04
Serial Number: 4765
Issue Time: 2024 Dec 02 2322 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 02 2321 UTC
Valid To: 2024 Dec 03 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.
Space Weather Message Code: ALTK05
Serial Number: 1679
Issue Time: 2024 Nov 30 0242 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Nov 30 0242 UTC
Synoptic Period: 0000-0300 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.
Space Weather Message Code: WARK05
Serial Number: 1954
Issue Time: 2024 Nov 30 0155 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Nov 30 0155 UTC
Valid To: 2024 Nov 30 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.
Space Weather Message Code: ALTK04
Serial Number: 2503
Issue Time: 2024 Nov 30 0124 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Nov 30 0123 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.
Space Weather Message Code: WARK04
Serial Number: 4764
Issue Time: 2024 Nov 30 0115 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Nov 30 0112 UTC
Valid To: 2024 Nov 30 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.
Space Weather Message Code: WATA30
Serial Number: 246
Issue Time: 2024 Nov 29 1734 UTC
CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 245
Original Issue Time: 2024 Nov 26 1749 UTC
Comment: G2 conditions are no longer anticipated.
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.
Space Weather Message Code: WATA30
Serial Number: 245
Issue Time: 2024 Nov 26 1749 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Nov 27: None (Below G1) Nov 28: G1 (Minor) Nov 29: G2 (Moderate)
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 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.
Space Weather Message Code: ALTTP2
Serial Number: 1377
Issue Time: 2024 Nov 26 0013 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Nov 25 2200 UTC
Estimated Velocity: 490 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.
Space Weather Message Code: ALTTP2
Serial Number: 1376
Issue Time: 2024 Nov 25 2107 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Nov 25 2043 UTC
Estimated Velocity: 248 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.
Space Weather Message Code: SUM10R
Serial Number: 849
Issue Time: 2024 Nov 25 0821 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Nov 25 0733 UTC
Maximum Time: 2024 Nov 25 0734 UTC
End Time: 2024 Nov 25 0736 UTC
Duration: 3 minutes
Peak Flux: 210 sfu
Latest Penticton Noon Flux: 203 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.
Space Weather Message Code: SUMXM5
Serial Number: 271
Issue Time: 2024 Nov 25 0815 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Nov 25 0724 UTC
Maximum Time: 2024 Nov 25 0742 UTC
End Time: 2024 Nov 25 0802 UTC
X-ray Class: M9.4
Location: N21E90
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.
Space Weather Message Code: ALTXMF
Serial Number: 453
Issue Time: 2024 Nov 25 0738 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Nov 25 0736 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.
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Ultimo brillamento X | 2024/12/08 | X2.2 |
Ultimo brillamento M | 2024/12/24 | M1.0 |
Ultima tempesta geomagnetica | 2024/12/17 | Kp5+ (G1) |
Giorni senza macchie | |
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Ultimo giorno senza macchie | 2022/06/08 |
Media mensile Numero di Macchie Solari | |
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novembre 2024 | 152.5 -13.9 |
dicembre 2024 | 115.2 -37.3 |
Last 30 days | 120.1 -38.2 |