:Product: 0528SGAS.txt :Issued: 2012 May 28 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 149 Issued at 0245Z on 28 May 2012 This report is compiled from data received at SWO on 27 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0142 0142 0142 180 0640 0640 0640 100 0732 0733 0733 210 0739 0739 0739 130 0746 0746 0746 100 1940 1940 1940 130 B. Proton Events: The greater than 10 MeV proton event at geosynchronous orbit began at 27/0535Z, reached a maximum of 14 pfu at 27/1045Z and ended at 27/1235Z. C. Geomagnetic Activity Summary: The geomagnetic field has been at quiet levels for the past 24 hours. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 111 SSN 083 Afr/Ap 003/005 X-ray Background B2.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.6e+06 GT 10 MeV 5.2e+05 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.30e+08 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 1 0 1 1 2 2 1 Planetary 2 1 0 1 1 1 2 2 F. Comments: None