:Product: 1222SGAS.txt :Issued: 2025 Dec 22 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 356 Issued at 0245Z on 22 Dec 2025 This report is compiled from data received at SWO on 21 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1812 1827 1836 4316 S07E28 M1.3 Sf 1929 1943 1951 4316 C3.9 3800 1951 2000 2003 C6.1 6800 2157 2212 2219 4316 S07E24 C3.1 Sf 710 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field reached minor storm levels D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 124 SSN 085 Afr/Ap 020/027 X-ray Background B6.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+06 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 3.60e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 2 3 4 4 5 3 4 Planetary 4 3 3 4 4 5 4 5 F. Comments: None