:Product: 0121RSGA.txt :Issued: 2007 Jan 21 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 021 Issued at 2200Z on 21 Jan 2007 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was low. A single C-class flare occurred in Region 939 (S04W30). This sunspot group is slowly growing. IB. Solar Activity Forecast: Solar activity is expected to be low. C-class flares are possible in Region 939. IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit was high. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. III. Event Probabilities 22 Jan-24 Jan Class M 05/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 21 Jan 079 Predicted 22 Jan-24 Jan 080/080/080 90 Day Mean 21 Jan 084 V. Geomagnetic A Indices Observed Afr/Ap 20 Jan 006/007 Estimated Afr/Ap 21 Jan 006/008 Predicted Afr/Ap 22 Jan-24 Jan 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 22 Jan-24 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