:Product: 20001219SGAS.txt :Issued: 2000 Dec 19 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 354 Issued at 0245Z on 19 Dec 2000 This report is compiled from data received at SWO on 18 Dec A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0452 0452 0453 2200 0512 0516 0541 C2.2 560 0842 0842 0843 430 1103 1111 1129 9269 N15E01 C7.0 Sf 96 54 II B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was quiet to unsettled. D. Stratwarm: STRATWARM ALERT EXISTS STRATWARM MONDAY STRONG STRATOSPHERIC MINOR WARMING CONTINUES. A SPLIT VORTEX WITH A MAJOR CENTER OVER NORTHERN CANADA AND A MINOR CENTER OVER WESTERN SIBERIA WEAKENS. THE ANTICYCLONE OVER THE NORTH PACIFIC WEAKENS. THE WARM REGION OVER THE LABRADOR SEA INTENSIFIES. THE WARM REGION OVER CENTRAL ASIA WEAKENS. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 198 SSN 174 Afr/Ap 007/010 X-ray Background C1.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.0e+05 GT 10 MeV 1.0e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 4.30e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 2 3 3 1 3 1 2 Planetary 2 3 3 3 2 3 2 3 F. Comments: None