:Product: 0123RSGA.txt :Issued: 2007 Jan 23 2204 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 023 Issued at 2200Z on 23 Jan 2007 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was very low. Region 939 (S03W55) has changed little since yesterday and continues to produce small B-class flares. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. C-class flares are possible in Region 939. IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit was high. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be mostly quiet. III. Event Probabilities 24 Jan-26 Jan Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Jan 079 Predicted 24 Jan-26 Jan 080/075/075 90 Day Mean 23 Jan 084 V. Geomagnetic A Indices Observed Afr/Ap 22 Jan 002/003 Estimated Afr/Ap 23 Jan 003/005 Predicted Afr/Ap 24 Jan-26 Jan 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 24 Jan-26 Jan A. Middle Latitudes Active 10/10/10 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor storm 10/10/10 Major-severe storm 05/05/05