Viewing archive of Thursday, 28 August 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Aug 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 240 Issued at 0245Z on 28 Aug 2025 This report is compiled from data received at SWO on 27 AugA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0414 0414 0414 520
B. Proton Events
The greater than 10 MeV proton event that began
at 25/1355z, reached a peak flux of 13.9 pfu at 27/0740z and ended
at 27/1505z.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 226 SSN 227 Afr/Ap 009/008 X-ray Background C2.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.4e+07 GT 10 MeV 8.6e+05 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.30e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 1 1 4 3 2 2 Planetary 1 1 1 3 3 2 2 2
F. Comments
None.
All times in UTC
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
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