:Product: 20041111SGAS.txt :Issued: 2004 Nov 11 0250 UT # 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 316 Issued at 0245Z on 11 Nov 2004 This report is compiled from data received at SWO on 10 Nov A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0000 0000 0247 IV 0159 0213 0220 0696 N09W49 X2.5 3b 2700 650 II/IV 0221 0221 0249 N09W48 3n 0234 0000 0241 II 0247 0000 0410 IV 0305 0305 0306 480 0441 0441 0441 87 IV 0600 0000 0800 IV 0727 0739 0747 C2.6 110 0749 0749 0750 440 0839 0839 0839 520 0956 0956 0956 250 2205 2205 2205 67 IV B. Proton Events: A greater than 10 MeV peak flux of 424 pfu was observed at 10/1655Z. A greater than 100 Mev proton event began at 10/0320Z, peaked at 2.1 pfu at 10/0340Z, and ended at 10/1250Z. C. Geomagnetic Activity Summary: The geomagnetic field ranged from active to severe storm levels. Yesterday's strong shock at 09/1852Z was followed by a short period of strong southward Bz to near 40 nT, before rotating northward for approximately five hours. At 10/0100Z, the solar wind exceeded 800 km/s and Bz rotated southward again, ranging from -15 to -25 nT for over nine hours. The geomagnetic field response was severe at all latitudes. The period ended at minor storm levels with solar wind speed declining to near 600 km/s. D. Stratwarm: None. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 105 SSN 050 Afr/Ap 100/181 X-ray Background B5.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.2e+08 GT 10 MeV 1.1e+07 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W102 degrees) Daily Electron Fluence GT 2 MeV 3.30e+08 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 7 7 8 8 6 5 5 3 Planetary 8 8 9 9 7 6 5 4 F. Comments: None.