:Product: 0815SGAS.txt :Issued: 2026 Aug 15 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 227 Issued at 0245Z on 15 Aug 2026 This report is compiled from data received at SWO on 14 Aug A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0507 0507 0507 110 0638 0701 0731 4503 C4.1 II 1357 1357 1357 110 1704 1704 1704 100 1959 1959 2000 270 2009 2009 2010 1100 2053 2053 2053 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 114 SSN 106 Afr/Ap 012/??? X-ray Background B4.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.0e+05 GT 10 MeV 2.0e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.50e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W72 degrees) 3 Hour K-indices: Boulder 3 4 4 3 2 4 2 2 Planetary 3 2 3 3 2 2 2 ? F. Comments: None.