:Product: 20020717SGAS.txt :Issued: 2002 Jul 17 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 198 Issued at 0245Z on 17 Jul 2002 This report is compiled from data received at SWO on 16 Jul A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0008 0011 0015 C4.6 IV 0328 0328 0329 120 1202 1221 1237 0036 S08E71 Sf II 1331 1410 1421 0030 N23W07 C8.5 Sf 200 64 1912 1915 1917 C1.4 160 2122 2138 2148 0030 N19W14 C2.6 Sf 280 B. Proton Events: A greater than 10 MeV proton event began at geosynchronous orbit at 16/1750 UTC. The 10 MeV flux at the close of the period was 32 pfu and gradually increasing. C. Geomagnetic Activity Summary: Geomagnetic field activity was at quiet to active levels. Active levels occurred at some high latitude stations during 16/1800-2100 UTC. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 172 SSN 182 Afr/Ap 011/011 X-ray Background C2.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.4e+06 GT 10 MeV 7.3e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.90e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 3 2 2 3 3 3 3 Planetary 2 3 2 2 2 2 4 4 F. Comments: Afr estimated based on Boulder USGS magnetometer data.