:Product: 20030501SGAS.txt :Issued: 2003 May 01 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 121 Issued at 0245Z on 01 May 2003 This report is compiled from data received at SWO on 30 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1251 1252 1259 0340 S12W52 Sf 210 B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at unsettled to major storm levels. Most of the activity was at active to minor storm levels. Periods of southward Bz early in the day resulted in an isolated period of major storm levels. Solar wind speed gradually increased throughout the day to near 650 km/s. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 154 SSN 160 Afr/Ap 037/040 X-ray Background B4.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.8e+06 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 7.60e+07 e/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) 3 Hour K-indices: Boulder 5 6 5 4 3 4 4 4 Planetary 5 6 5 5 4 4 4 5 F. Comments: None