:Product: 0531SGAS.txt :Issued: 2010 May 31 0246 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 151 Issued at 0245Z on 31 May 2010 This report is compiled from data received at SWO on 30 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None B. Proton Events: None C. Geomagnetic Activity Summary: Geomagnetic field activity was at quiet to minor storm levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 073 SSN 040 Afr/Ap 012/019 X-ray Background A2.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.2e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 6.70e+07 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 2 4 2 2 3 3 3 Planetary 3 3 4 2 2 4 5 4 F. Comments: Afr value was estimated due to IT problems at SWPC.