:Product: 20030522SGAS.txt :Issued: 2003 May 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 142 Issued at 0245Z on 22 May 2003 This report is compiled from data received at SWO on 21 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 2203 2203 2204 130 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at quiet to active levels. Periods of southward Bz near -10 nT resulted in two active periods during the day. Solar wind speed began a steady increase, most likely due to the onset of an equatorial coronal hole high speed flow. Wind speed increased from 400 km/s to over 600 km/s and continues to rise. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 119 SSN 079 Afr/Ap 019/020 X-ray Background B2.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 4.7e+05 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W93 degrees) Daily Electron Fluence GT 2 MeV 1.20e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 3 4 2 2 3 4 4 4 Planetary 3 4 2 2 3 4 4 5 F. Comments: None