Viewing archive of Friday, 21 March 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Mar 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 080 Issued at 0245Z on 21 Mar 2025 This report is compiled from data received at SWO on 20 MarA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0319 0319 0319 290 1805 1806 1806 360 1826 1826 1826 190
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field at quiet to
usnettled levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 170 SSN 139 Afr/Ap 005/008 X-ray Background C1.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.1e+06 GT 10 MeV 2.0e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 2.30e+07 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 2 1 3 3 1 2 Planetary 2 2 2 1 3 2 2 2
F. Comments
None.
All times in UTC
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/22 | M2.3 |
| Last geomagnetic storm | 2026/05/16 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
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| April 2026 | 79.3 -6.6 |
| May 2026 | 88.6 +9.3 |
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