:Product: 1004SGAS.txt :Issued: 2025 Oct 04 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 277 Issued at 0245Z on 04 Oct 2025 This report is compiled from data received at SWO on 03 Oct A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0042 0042 0042 200 0138 0138 0139 110 0145 0145 0145 110 0442 0442 0442 100 0500 0523 0542 4236 N13W13 M1.5 2n 320 0815 0816 0816 130 1101 1104 II 1112 2034 IV 1220 1237 1250 4226 C6.1 690 II 1419 1436 1515 4238 M1.2 II 1658 1658 1658 100 1701 1701 1701 100 B. Proton Events: None. C. Geomagnetic Activity Summary: The geomagnetic field reached minor storm levels in response to CH HSS influences. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 170 SSN 150 Afr/Ap 020/030 X-ray Background C1.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.3e+06 GT 10 MeV 2.1e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 2.80e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 4 4 5 4 3 4 3 3 Planetary 4 5 5 4 3 3 4 ? F. Comments: None.