:Product: 0321RSGA.txt :Issued: 2010 Mar 21 2200 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 080 Issued at 2200Z on 21 Mar 2010 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was very low. Region 1056 (N18W06) has grown in size and number of spots while producing several B-class flares. IB. Solar Activity Forecast: Solar activity is expected to remain very low to low with only a slight chance for a C-class flare over the next 3 days (22-24 March). IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain quiet for the next 3 days (22-24 March). III. Event Probabilities 22 Mar-24 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 21 Mar 085 Predicted 22 Mar-24 Mar 085/085/085 90 Day Mean 21 Mar 082 V. Geomagnetic A Indices Observed Afr/Ap 20 Mar 005/007 Estimated Afr/Ap 21 Mar 002/005 Predicted Afr/Ap 22 Mar-24 Mar 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 22 Mar-24 Mar A. Middle Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01