Viewing archive of Saturday, 20 April 2024
Geophysical report
Solar and Geophysical Activity Summary 2024 Apr 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 111 Issued at 0245Z on 20 Apr 2024 This report is compiled from data received at SWO on 19 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0042 0042 0043 2100 0105 0111 0120 3639 C3.0 220 0440 0453 0503 3635 N20W58 M2.1 Sf 1048 1048 1048 170 1253 1306 1323 3647 M1.0 210 1433 1433 1433 200 1458 1504 1511 3639 C4.4 430 1632 1632 1632 1100 1637 1637 1637 470 1640 1640 1640 410 1847 1847 1847 140 1849 1849 1850 470 1852 1852 1852 100 2130 2130 2130 800
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field reached
severe storm levels due to CME activity.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 213 SSN 243 Afr/Ap 021/046 X-ray Background C2.3 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 8.8e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.00e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 2 5 4 5 5 5 3 Planetary 2 1 5 5 5 5 7 4
F. Comments
None.
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Rovaniemi, Sodankylä, UtsjokiReykjavik
Kirkenes, Tromsø
Murmansk
Kiruna
Latest news
Wednesday, 5 March 2025
Coronal hole faces Earth
Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001
Friday, 7 February 2025
Coronal hole faces Earth, Minor G1 geomagnetic storm watch
Latest forum messages
CMEs from March 16-17 and small CH 92Filaments and prominences 72850 mhz F2 63Ask your obscure/"stupid" space weather questions. 344AR 4031 2
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
Wednesday, 19 March 2025
21:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:59 UTC
21:00 UTC - Solar flare
Moderate M1.54 flare
20:42 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.36)
17:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 52GW at 18:01 UTC
00:54 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 113GW at 01:33 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/19 | M1.5 |
| Last geomagnetic storm | 2025/03/14 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 138.4 -16.2 |
| Last 30 days | 143 -10 |