:Product: 1228SGAS.txt :Issued: 2025 Dec 28 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 362 Issued at 0245Z on 28 Dec 2025 This report is compiled from data received at SWO on 27 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0128 0128 0128 350 0138 0150 0159 4325 M5.1 320 II 0144 0144 0146 190 1908 1908 1908 240 B. Proton Events: None. C. Geomagnetic Activity Summary: The geomagnetic field was quiet and unsettled. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 178 SSN 130 Afr/Ap 005/007 X-ray Background C1.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.0e+06 GT 10 MeV 1.7e+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 1 3 2 2 2 2 2 2 Planetary 1 3 2 2 2 1 2 2 F. Comments: None.