:Product: 0211RSGA.txt :Issued: 2013 Feb 11 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 Solar Geophysical Activity Report and Forecast SDF Number 42 Issued at 2200Z on 11 Feb 2013 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be at low levels on days one, two, and three (12 Feb, 13 Feb, 14 Feb). IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 384 km/s at 11/2055Z. Total IMF reached 7.7 nT at 11/1539Z. The maximum southward component of Bz reached -3.7 nT at 10/2122Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels for the next three days (12 Feb, 13 Feb, 14 Feb). III. Event probabilities 12 Feb-14 Feb Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Feb 105 Predicted 12 Feb-14 Feb 105/100/100 90 Day Mean 11 Feb 118 V. Geomagnetic A Indices Observed Afr/Ap 10 Feb 003/004 Estimated Afr/Ap 11 Feb 003/003 Predicted Afr/Ap 12 Feb-14 Feb 007/008-006/005-006/005 VI. Geomagnetic Activity Probabilities 12 Feb-14 Feb A. Middle Latitudes Active 10/05/05 Minor Storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/15/15 Major-severe storm 15/10/10