:Product: 0203RSGA.txt :Issued: 2011 Feb 03 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 034 Issued at 2200Z on 03 Feb 2011 IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity was very low. Region 1150 (S22W13) decayed throughout the period. New Region 1152 (S18E11) was numbered today after producing a B2 x-ray event. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare for the next 3 days (4-6 February). IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: The geomagnetic field was very low throughout the period. IIB. Geophysical Activity Forecast: The geomagnetic field is forecast to be mostly unsettled to active with the chance for a minor storm on day 1 (4 February) due to coronal hole effects in conjunction with the anticipated arrival of the CME from 30 January. Conditions are forecast to be mostly unsettled on day 2 (5 February) before returning to mostly quiet on day 3 (6 February) when coronal hole effects subside. III. Event Probabilities 04 Feb-06 Feb Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 03 Feb 080 Predicted 04 Feb-06 Feb 080/080/080 90 Day Mean 03 Feb 084 V. Geomagnetic A Indices Observed Afr/Ap 02 Feb 005/005 Estimated Afr/Ap 03 Feb 005/005 Predicted Afr/Ap 04 Feb-06 Feb 010/010-008/008-005/005 VI. Geomagnetic Activity Probabilities 04 Feb-06 Feb A. Middle Latitudes Active 30/25/20 Minor storm 40/10/05 Major-severe storm 10/05/01 B. High Latitudes Active 40/30/20 Minor storm 45/20/10 Major-severe storm 15/10/01