:Product: 0327SGAS.txt :Issued: 2025 Mar 27 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 086 Issued at 0245Z on 27 Mar 2025 This report is compiled from data received at SWO on 26 Mar A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0744 0809 0821 4043 M1.0 0907 0912 0920 4043 C6.5 II 0920 0934 II B. Proton Events: None. C. Geomagnetic Activity Summary: The geomagnetic field reached major storm levels during the period. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 152 SSN 063 Afr/Ap 026/048 X-ray Background C1.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.1e+06 GT 10 MeV 1.6e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.80e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 4 4 2 3 5 5 6 4 Planetary 4 4 2 3 6 6 6 4 F. Comments: None