:Product: 20041206RSGA.txt :Issued: 2004 Dec 06 2320 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 341 Issued at 2200Z on 06 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: Solar activity was very low. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic field was quiet to active. Active levels were caused by sustained periods of southward Bz. Solar wind speed at ACE has increased from approximately 400 km/s to 460 km/s. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active conditions possible. III. Event Probabilities 07 Dec-09 Dec Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 06 Dec 093 Predicted 07 Dec-09 Dec 090/090/090 90 Day Mean 06 Dec 107 V. Geomagnetic A Indices Observed Afr/Ap 05 Dec 007/008 Estimated Afr/Ap 06 Dec 012/020 Predicted Afr/Ap 07 Dec-09 Dec 008/010-008/010-008/010 VI. Geomagnetic Activity Probabilities 07 Dec-09 Dec A. Middle Latitudes Active 25/25/25 Minor storm 10/10/10 Major-severe storm 01/01/01 B. High Latitudes Active 30/30/30 Minor storm 15/15/15 Major-severe storm 05/05/05