:Product: 20030421SGAS.txt :Issued: 2003 Apr 21 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Solar and Geophysical Activity Summary SGAS Number 111 Issued at 0245Z on 21 Apr 2003 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 0359 0400 0409 190 0413 0413 0415 130 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field has been at quiet to unsettled levels. The greater than 2 MeV fluxes at geosynchronous orbit reached high levels today. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 119 SSN 093 Afr/Ap 017/016 X-ray Background B2.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.7e+06 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 1.40e+08 e/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) 3 Hour K-indices: Boulder 3 4 4 2 3 4 2 3 Planetary 4 4 4 2 3 3 2 4 F. Comments: None