:Product: 0210RSGA.txt :Issued: 2011 Feb 10 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 041 Issued at 2200Z on 10 Feb 2011 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity was low. Region 1153 produced a few B-class and C-class events early in the period before rotating off the disk. Region 1156 (S14E09) remained stable and quiet. IB. Solar Activity Forecast: Solar activity is expected to be very low to low over the next 3 days (11-13 February). IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field was mostly quiet with an isolated period of unsettled conditions between 10/06Z and 10/09Z at mid latitudes. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels throughout the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be mostly quiet for the next 3 days (11-13 February). III. Event Probabilities 11 Feb-13 Feb Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 10 Feb 091 Predicted 11 Feb-13 Feb 090/090/090 90 Day Mean 10 Feb 084 V. Geomagnetic A Indices Observed Afr/Ap 09 Feb 001/002 Estimated Afr/Ap 10 Feb 001/005 Predicted Afr/Ap 11 Feb-13 Feb 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 11 Feb-13 Feb A. Middle Latitudes Active 20/20/20 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor storm 01/01/01 Major-severe storm 01/01/01