:Product: 0331SGAS.txt :Issued: 2026 Mar 31 0300 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 090 Issued at 0245Z on 31 Mar 2026 This report is compiled from data received at SWO on 30 Mar A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0247 0319 0344 4405 X1.4 1800 II 0942 0942 0942 110 1205 1205 1205 140 B. Proton Events: None C. Geomagnetic Activity Summary: None D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 152 SSN 143 Afr/Ap 011/012 X-ray Background C1.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.9e+05 GT 10 MeV 1.6e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 4.70e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W72 degrees) 3 Hour K-indices: Boulder 2 3 4 3 3 2 2 2 Planetary 3 3 3 3 3 2 2 2 F. Comments: None