:Product: 20001205RSGA.txt :Issued: 2000 Dec 05 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 340 Issued at 2200Z on 05 Dec 2000 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity has been low. A long duration C1 X-ray flare occurred at 05/1823Z. An examination of SOHO/EIT images suggest that it originated from Region 9246 (S17E51). The remainder of the solar disk was mostly stable through the period. IB. Solar Activity Forecast: Solar activity is expected to be low for the forecast period. IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was predominately quiet the past 24 hours. One period of active conditions was observed at mid latitudes at 04/2400Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the forecast period. III. Event Probabilities 06 Dec-08 Dec Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 05 Dec 147 Predicted 06 Dec-08 Dec 145/145/145 90 Day Mean 05 Dec 176 V. Geomagnetic A Indices Observed Afr/Ap 04 Dec 008/010 Estimated Afr/Ap 05 Dec 008/010 Predicted Afr/Ap 06 Dec-08 Dec 010/010-010/010-010/010 VI. Geomagnetic Activity Probabilities 06 Dec-08 Dec A. Middle Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/25 Minor storm 10/10/10 Major-severe storm 05/05/05