:Product: 0519SGAS.txt :Issued: 2013 May 19 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 139 Issued at 0245Z on 19 May 2013 This report is compiled from data received at SWO on 18 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1615 1615 1615 220 B. Proton Events: The 10MeV proton event which began 2013 May 15 1325 UTC reached a maximum of 41 pfu on 2013 May 17 1720 UTC and ended today at 2013 May 18 1445 UTC. C. Geomagnetic Activity Summary: The geomagnetic field ranged from quiet to major storm levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 132 SSN 146 Afr/Ap 016/024 X-ray Background B4.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.2e+07 GT 10 MeV 1.1e+06 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 4.50e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 4 5 5 3 2 3 2 2 Planetary 4 6 4 3 2 2 3 2 F. Comments: None