:Product: 0420SGAS.txt :Issued: 2011 Apr 20 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 110 Issued at 0245Z on 20 Apr 2011 This report is compiled from data received at SWO on 19 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1208 1208 1208 120 1208 1208 1208 140 1755 1755 1755 100 1758 1758 1758 100 1829 1829 1830 130 1832 1832 1832 140 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at quiet to unsettled levels.. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 111 SSN 076 Afr/Ap 004/006 X-ray Background B4.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.8e+04 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) Daily Electron Fluence GT 2 MeV 1.90e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) 3 Hour K-indices: Boulder 1 2 1 1 2 2 1 3 Planetary 1 2 1 1 2 2 1 3 F. Comments: None