:Product: 1231SGAS.txt :Issued: 2025 Dec 31 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 365 Issued at 0245Z on 31 Dec 2025 This report is compiled from data received at SWO on 30 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1456 1456 1456 250 B. Proton Events: None C. Geomagnetic Activity Summary: Field levels were at quiet to unsettled levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 182 SSN 141 Afr/Ap 005/008 X-ray Background C1.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.9e+06 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.60e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 2 2 1 3 3 2 2 Planetary 2 2 2 2 3 3 2 1 F. Comments: None