:Product: 0816SGAS.txt :Issued: 2025 Aug 16 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 228 Issued at 0245Z on 16 Aug 2025 This report is compiled from data received at SWO on 15 Aug A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1942 1943 1943 170 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 123 SSN 168 Afr/Ap 010/007 X-ray Background B5.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.0e+04 GT 10 MeV 1.6e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.50e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 3 4 3 2 3 2 1 Planetary ? ? ? ? ? ? ? ? F. Comments: None.