Viewing archive of Wednesday, 16 April 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Apr 16 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 106 Issued at 0245Z on 16 Apr 2025 This report is compiled from data received at SWO on 15 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1004 1020 1028 M1.5 1757 1813 1827 4055 M1.3
B. Proton Events
None
C. Geomagnetic Activity Summary
The geopmagnetic field reached G2
(Moderate) levels
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 153 SSN 058 Afr/Ap 013/034 X-ray Background C1.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.7e+06 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 5.90e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 2 2 1 3 4 5 5 Planetary 3 2 2 1 3 4 5 5
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 | 2026/06/02 | M3.3 |
| 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 | |
|---|---|
| April 2026 | 79.3 -6.6 |
| June 2026 | 146 +66.7 |
| Last 30 days | 96.6 +4 |
