:Product: 20030523SGAS.txt :Issued: 2003 May 23 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 143 Issued at 0245Z on 23 May 2003 This report is compiled from data received at SWO on 22 May A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at active to minor storm levels with one period of quiet conditions. Solar wind speed decreased slightly from yesterday but has remained elevated near 500 km/s due to a coronal hole high speed stream. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 118 SSN 110 Afr/Ap 026/025 X-ray Background B2.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.2e+06 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W93 degrees) Daily Electron Fluence GT 2 MeV 1.00e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 5 5 4 2 4 4 3 3 Planetary 5 5 4 3 4 4 3 2 F. Comments: None