:Product: 0421SGAS.txt :Issued: 2011 Apr 21 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 111 Issued at 0245Z on 21 Apr 2011 This report is compiled from data received at SWO on 20 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0021 0021 0021 200 0025 0025 0025 210 1957 1957 1957 260 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at quiet to active levels. D. Stratwarm: Not Available E. Daily Indices: (real-time preliminary/estimated values) 10 cm 117 SSN 090 Afr/Ap 011/016 X-ray Background B4.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.6e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) Daily Electron Fluence GT 2 MeV 4.40e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) 3 Hour K-indices: Boulder 3 4 4 3 3 3 1 1 Planetary 3 5 4 3 3 3 2 1 F. Comments: None