:Product: 20031228SGAS.txt :Issued: 2003 Dec 28 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 362 Issued at 0245Z on 28 Dec 2003 This report is compiled from data received at SWO on 27 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at predominantly quiet to unsettled levels with a brief period of active conditions at high latitudes late in the period. D. Stratwarm: STRATWARM ALERT / SATURDAY / STRATWARM EXISTS. INTENSE WARMING OVER NORTHEASTERN SIBERIA / IRELAND CONTINUES WITH THE TEMPERATURE GRADIENT BETWEEN 60N AND THE POLE REVERSED FROM 10 HPA UPWARDS. EASTERLY ZONAL MEAN WINDS AT 60N, 2 HPA. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 127 SSN 047 Afr/Ap 012/012 X-ray Background B2.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.7e+05 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W104 degrees) Daily Electron Fluence GT 2 MeV 1.70e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 2 3 2 3 2 3 3 3 Planetary 3 3 2 3 3 3 3 4 F. Comments: None