:Product: 20030422SGAS.txt :Issued: 2003 Apr 22 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 112 Issued at 0245Z on 22 Apr 2003 This report is compiled from data received at SWO on 21 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0438 0438 0438 100 1254 1307 1314 0338 N18E02 M2.8 1n 1400 300 II/IV 1852 1852 1853 140 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at predominantly unsettled to active levels with isolated high latitude minor storm periods. A high speed solar wind stream, with winds ranging from 520 - 600 km/s, continues to buffet the geomagnetic field. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 126 SSN 154 Afr/Ap 018/021 X-ray Background B2.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.9e+06 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 1.30e+08 e/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) 3 Hour K-indices: Boulder 3 3 4 4 3 3 3 3 Planetary 4 4 5 4 3 3 3 3 F. Comments: The greater than 2 MeV electrons at geosynchronous orbit reached high levels.