:Product: 20020523SGAS.txt :Issued: 2002 May 23 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 143 Issued at 0245Z on 23 May 2002 This report is compiled from data received at SWO on 22 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1321 1321 1321 130 B. Proton Events: A greater than 10 MeV proton event began at 22/1755 UTC and continues in progress. The end of day flux was 65 PFU at greater than 10 MeV. C. Geomagnetic Activity Summary: The geomagnetic field ranged from quiet to active levels. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 181 SSN 217 Afr/Ap 010/014 X-ray Background C4.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.2e+07 GT 10 MeV 1.0e+06 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.30e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 1 2 3 3 3 2 1 Planetary 2 2 3 4 3 3 3 3 F. Comments: None