:Product: 0826SGAS.txt :Issued: 2025 Aug 26 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 238 Issued at 0245Z on 26 Aug 2025 This report is compiled from data received at SWO on 25 Aug A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0501 0524 0540 4199 M4.5 0904 0907 0909 4197 M1.0 1506 1518 1528 4199 M1.2 1530 1538 1541 4199 M1.1 B. Proton Events: The greater than 10 MeV proton event that began at 25/1355 UTC, reached a current maximum of 10.3 pfu at 25/1415 UTC. C. Geomagnetic Activity Summary: The geomagnetic field was quiet to unsettled. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 175 SSN 136 Afr/Ap 007/008 X-ray Background C2.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.5e+06 GT 10 MeV 6.7e+05 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 4.10e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 1 0 1 3 3 2 1 Planetary 1 1 1 1 3 3 2 2 F. Comments: None.