:Product: 0528SGAS.txt :Issued: 2025 May 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 148 Issued at 0245Z on 28 May 2025 This report is compiled from data received at SWO on 27 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0519 0519 0520 180 0743 1011 1159 4100 N18E62 C5.0 Sf 120 1014 1014 1014 210 1111 1111 1111 100 1303 1303 1304 100 1308 1308 1308 110 1322 1322 1322 140 1332 1332 1332 150 1505 1505 1505 120 B. Proton Events: None C. Geomagnetic Activity Summary: Field conditions were at quiet to active levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 137 SSN 116 Afr/Ap 012/??? X-ray Background B8.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.5e+05 GT 10 MeV 1.5e+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 W0 degrees) 3 Hour K-indices: Boulder 2 2 1 3 3 3 3 4 Planetary ? ? ? ? ? ? ? ? F. Comments: None