:Product: 1207RSGA.txt :Issued: 2007 Dec 07 2203 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 341 Issued at 2200Z on 07 Dec 2007 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity has been very low. IB. Solar Activity Forecast: Solar activity is expected to remain very low, however, there is the chance for an isolated C-class flare from either Region 977 (S05W16) or 978 (S09E54). IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field was at quiet levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels 08 - 09 December. On 10 December the geomagnetic field is expected to be unsettled due to a recurrent coronal hole high speed stream rotating into a geoeffective position. III. Event Probabilities 08 Dec-10 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 07 Dec 082 Predicted 08 Dec-10 Dec 085/085/085 90 Day Mean 07 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 06 Dec 001/001 Estimated Afr/Ap 07 Dec 001/001 Predicted Afr/Ap 08 Dec-10 Dec 005/005-005/005-008/008 VI. Geomagnetic Activity Probabilities 08 Dec-10 Dec A. Middle Latitudes Active 05/05/15 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/25 Minor storm 10/10/15 Major-severe storm 01/01/05