:Product: 1226RSGA.txt :Issued: 2007 Dec 26 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 360 Issued at 2200Z on 26 Dec 2007 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was very low. The visible disk remains spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the forecast period, December 27 - 29. III. Event Probabilities 27 Dec-29 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 26 Dec 073 Predicted 27 Dec-29 Dec 072/072/072 90 Day Mean 26 Dec 072 V. Geomagnetic A Indices Observed Afr/Ap 25 Dec 002/002 Estimated Afr/Ap 26 Dec 003/005 Predicted Afr/Ap 27 Dec-29 Dec 003/005-003/005-003/005 VI. Geomagnetic Activity Probabilities 27 Dec-29 Dec A. Middle Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01