:Product: 20020525SGAS.txt :Issued: 2002 May 25 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Solar and Geophysical Activity Summary SGAS Number 145 Issued at 0245Z on 25 May 2002 This report is compiled from data received at SWO on 24 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0322 0000 0328 II 0637 0646 0651 9963 M1.1 1333 1333 1334 300 B. Proton Events: The greater than 10 MeV proton event that began at 22/1755 UTC ended at 24/1455 UTC. The peak flux for this event was 820 pfu at 23/1055 UTC. C. Geomagnetic Activity Summary: Geomagnetic field activity was at quiet to unsettled levels. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 189 SSN 242 Afr/Ap 003/007 X-ray Background B5.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.5e+06 GT 10 MeV 9.6e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 9.50e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 0 0 1 1 2 1 0 Planetary 2 1 1 2 2 3 3 2 F. Comments: Afr estimated based on Boulder USGS magnetometer data.