:Product: 1213SGAS.txt :Issued: 2025 Dec 13 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 347 Issued at 0245Z on 13 Dec 2025 This report is compiled from data received at SWO on 12 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0450 0505 0514 4294 M2.0 6100 II 0527 0809 IV 0527 0544 0553 4294 M1.1 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 135 SSN 124 Afr/Ap 019/028 X-ray Background C1.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 8.8e+05 GT 10 MeV 1.4e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 2.00e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 4 4 3 4 3 3 4 4 Planetary 4 4 3 4 3 3 5 5 F. Comments: None