:Product: 1001SGAS.txt :Issued: 2025 Oct 01 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar and Geophysical Activity Summary SGAS Number 274 Issued at 0245Z on 01 Oct 2025 This report is compiled from data received at SWO on 30 Sep A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0019 0023 0034 4230 C3.0 110 0051 0056 0058 4232 M1.2 1700 120 0535 0536 0539 4232 N04E28 Sf 110 0750 0750 0750 170 0929 0940 0945 4226 S17W61 M2.7 1n 1032 1032 1032 120 1202 1227 1248 4238 S15W36 M1.8 Sf 2009 2009 2010 360 2019 2019 2019 150 2350 2350 2350 200 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field reached strong storm levels D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 187 SSN 171 Afr/Ap 043/075 X-ray Background C1.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.0e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.40e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 4 6 6 5 6 5 4 5 Planetary 5 7 6 5 6 6 5 6 F. Comments: CME/CH HSS activity persists