Viewing archive of Wednesday, 17 September 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Sep 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 260 Issued at 0245Z on 17 Sep 2025 This report is compiled from data received at SWO on 16 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field reached G1
(Minor) conditions early, before falling to mostly quiet levels by
the end of the period.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 135 SSN 130 Afr/Ap 017/021 X-ray Background B8.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.6e+07 GT 10 MeV 1.8e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.00e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 5 4 4 3 3 3 2 2 Planetary 5 4 4 4 4 2 2 3
F. Comments
None
All times in UTC
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