:Product: 20020728SGAS.txt :Issued: 2002 Jul 28 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 209 Issued at 0245Z on 28 Jul 2002 This report is compiled from data received at SWO on 27 Jul A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1029 1029 1029 130 1438 1438 1438 120 2041 2044 2048 200 2110 2110 2110 130 B. Proton Events: The greater than 10 MeV proton event that began at 22/0655 UTC ended at 27/0320 UTC. The maximum for this event was 28 pfu at 23/1025 UTC. C. Geomagnetic Activity Summary: Geomagnetic field activity was at unsettled to active levels during most of the period. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 231 SSN 323 Afr/Ap 014/019 X-ray Background C9.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.1e+06 GT 10 MeV 5.8e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 4.80e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 3 3 3 3 2 3 3 Planetary 4 3 3 4 4 3 4 3 F. Comments: Afr estimated using Boulder USGS magnetometer data.