:Product: 20030425SGAS.txt :Issued: 2003 Apr 25 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 115 Issued at 0245Z on 25 Apr 2003 This report is compiled from data received at SWO on 24 Apr A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0150 0150 0150 140 0829 0830 0830 130 1036 1039 1039 270 1245 1253 1303 0338 N21W39 M3.3 1n 830 89 II/IV 2228 2233 2235 0338 C1.3 220 B. Proton Events: None. C. Geomagnetic Activity Summary: The geomagnetic field was unsettled to active with occasional minor storm periods at high latitudes. High speed solar wind continues with speeds up to near 600 km/s. D. Stratwarm: None. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 128 SSN 171 Afr/Ap 021/024 X-ray Background B4.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.8e+06 GT 10 MeV 2.2e+04 p/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) Daily Electron Fluence GT 2 MeV 9.70e+07 e/(cm2-ster-day) (GOES-10 satellite synchronous orbit W135 degrees) 3 Hour K-indices: Boulder 3 3 3 4 3 4 4 4 Planetary 3 3 4 5 4 4 4 4 F. Comments: The greater than 2 MeV electrons at geosynchronous orbit reached high levels today.