:Product: 0110RSGA.txt :Issued: 2013 Jan 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 Solar Geophysical Activity Report and Forecast SDF Number 10 Issued at 2200Z on 10 Jan 2013 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C8 event observed at 10/1746Z from Region 1654 (N08E47). There are currently 8 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 (11 Jan, 12 Jan, 13 Jan) with an increasing chance for an M-class flare. IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: 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 352 km/s at 10/0712Z. Total IMF reached 5.7 nT at 10/1422Z. The maximum southward component of Bz reached -5.1 nT at 10/1420Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels for the next three days (11 Jan, 12 Jan, 13 Jan) with a chance for unsettled levels during days two and three. III. Event probabilities 11 Jan-13 Jan Class M 50/50/50 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Jan 174 Predicted 11 Jan-13 Jan 175/175/175 90 Day Mean 10 Jan 121 V. Geomagnetic A Indices Observed Afr/Ap 09 Jan 003/003 Estimated Afr/Ap 10 Jan 002/003 Predicted Afr/Ap 11 Jan-13 Jan 005/005-008/008-008/008 VI. Geomagnetic Activity Probabilities 11 Jan-13 Jan A. Middle Latitudes Active 05/10/10 Minor Storm 01/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 10/20/20 Major-severe storm 05/15/15