:Product: 0531SGAS.txt :Issued: 2013 May 31 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 151 Issued at 0245Z on 31 May 2013 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: Quiet D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 104 SSN 071 Afr/Ap 002/003 X-ray Background B2.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.8e+06 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-15 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 2.10e+09 e/(cm2-ster-day) (GOES-15 satellite synchronous orbit W135 degrees) 3 Hour K-indices: Boulder 1 0 0 1 1 2 1 1 Planetary 1 0 0 0 1 1 1 2 F. Comments: The greater than 2 MeV electron fluence at geosynchronous orbit reached very high levels during the period. Particle measurements are being reported from the GOES-15 spacecraft due to a GOES-13 outage.