:Product: 0428SGAS.txt :Issued: 2026 Apr 28 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 118 Issued at 0245Z on 28 Apr 2026 This report is compiled from data received at SWO on 27 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0128 0137 0142 4420 C4.6 430 0209 0215 0218 4420 C6.5 110 0330 0337 0341 4420 C5.9 110 0639 0645 0650 4425 N06E44 M1.0 Sf 0938 0938 0938 120 B. Proton Events: None C. Geomagnetic Activity Summary: Field activity was at quiet to unsettled levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 142 SSN 122 Afr/Ap 006/007 X-ray Background B7.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.0e+05 GT 10 MeV 1.8e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.40e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W72 degrees) 3 Hour K-indices: Boulder 2 2 1 2 2 2 ? ? Planetary 3 2 1 1 2 2 ? 1 F. Comments: None