:Product: 20031029SGAS.txt :Issued: 2003 Oct 29 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 302 Issued at 0245Z on 29 Oct 2003 This report is compiled from data received at SWO on 28 Oct A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0012 0014 0016 0488 N08E08 Sf 400 0127 0133 0145 0486 S19E15 C7.5 Sf 210 0149 0149 0149 280 0153 0154 0154 540 0203 0204 0205 440 0248 0257 0309 0488 N08E07 Sf 120 0317 0333 0352 0488 N08E07 Sf 370 0847 0847 0850 0000 N08E17 Sf IV 0951 1110 1124 0486 S16E08 X17.2 4b 490000 13000 II/IV 0954 0954 0954 0486 2200 84 1349 0000 0000 IV 1452 1453 1534 0486 S16E01 Sf 11000 440 B. Proton Events: The X17 flare that occurred at 28/1110Z produced proton events at greater than 10 and greater than 100 MeV which remain in progress at this time. The greater than 100 MeV event began at 28/1145Z with a maximum so far of 186 pfu. The greater than 10 MeV proton event began at 28/1215Z with a maximum so far of over 13,000 pfu. A polar cap absorption began at 28/1237Z and remains in progress. C. Geomagnetic Activity Summary: The geomagnetic field was quiet to active. A CME was observed to pass the ACE spacecraft at around 28/0130Z. Solar wind speed rose to near 800 km/s, but Bz stayed northward, thwarting a significant geomagnetic response. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 274 SSN 230 Afr/Ap 015/020 X-ray Background C3.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.8e+08 GT 10 MeV 1.8e+08 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W108 degrees) Daily Electron Fluence GT 2 MeV 4.80e+06 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W77 degrees) 3 Hour K-indices: Boulder 2 4 4 4 2 4 3 4 Planetary 3 4 4 4 3 4 3 4 F. Comments: None