Viewing archive of Thursday, 3 April 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Apr 03 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 093 Issued at 0245Z on 03 Apr 2025 This report is compiled from data received at SWO on 02 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0225 0225 0225 170 0255 0255 0255 100 0545 0545 0545 110 1028 1028 1028 1200 1130 1130 1130 130 1241 1241 1241 100 1247 1248 1248 110 1254 1254 1255 110 1309 1309 1309 140 1515 1515 1515 120 1622 1622 1622 120 1832 1832 1832 100 1916 1916 1916 160 2234 2234 2234 220
B. Proton Events
The greater than 10 Mev proton flux reached as
maximum of 16 pfu and exhibited a gradual downward trend towards
background levels.
C. Geomagnetic Activity Summary
The geomagnetic field reached
active levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 180 SSN 158 Afr/Ap 016/022 X-ray Background C1.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.4e+07 GT 10 MeV 7.4e+05 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 9.00e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 4 4 3 4 3 3 2 3 Planetary 4 4 4 4 3 2 3 4
F. Comments
Planetary Kp values no longer ingested by USAF. Values populated from SWPC planetary estimates.
All times in UTC
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/22 | M1.3 |
| Last geomagnetic storm | 2025/04/21 | Kp5+ (G1) |
| Spotless days | |
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| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 124.6 -9.6 |
| Last 30 days | 121.2 -9.9 |