:Product: Report of Solar-Geophysical Activity :Issued: 2008 Dec 15 2201 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 350 Issued at 2200Z on 15 Dec 2008 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity was very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: The geomagnetic field was at quiet levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (December 16-18). III. Event Probabilities 16 Dec-18 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 15 Dec 069 Predicted 16 Dec-18 Dec 068/068/068 90 Day Mean 15 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 14 Dec 001/000 Estimated Afr/Ap 15 Dec 001/005 Predicted Afr/Ap 16 Dec-18 Dec 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 16 Dec-18 Dec A. Middle Latitudes Active 05/10/10 Minor storm 01/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 05/15/15 Minor storm 01/05/05 Major-severe storm 01/01/01