:Product: 0111RSGA.txt :Issued: 2010 Jan 11 2331 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 ::::::::::CORRECTED COPY::::::::::: SDF Number 011 Issued at 2200Z on 11 Jan 2010 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity was very low. Region 1040 (N29E10) produced numerous B-class flares during the past 24 hours; the largest of these was a B9 flare at 11/1356Z. Region 1040 showed continued growth in areal coverage (300 millionths) and was classified as a Dhc-beta group with 25 spots. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. There is a slight chance for an insolated M-class flare from Region 1040. IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field was quiet to unsettled. Solar wind observations from the ACE spacecraft indicated the onset of a co-rotating interaction region around 11/0844Z. Solar wind velocity increased from around 357 km/s to a max of 542 km/s at around 11/1540Z. The interplanetary magnetic field (IMF) activity showed an enhancement of total field of 14 nT, and the southern component of the IMF ranged between +10 nT and -9 nT. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet, with isolated unsettled levels for the next two days (12-13 January) due to a coronal hole high-speed stream. Quiet levels are expected on day three (14 January). III. Event Probabilities 12 Jan-14 Jan Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Jan 089 Predicted 12 Jan-14 Jan 090/090/090 90 Day Mean 11 Jan 074 V. Geomagnetic A Indices Observed Afr/Ap 10 Jan 002/002 Estimated Afr/Ap 11 Jan 009/007 Predicted Afr/Ap 12 Jan-14 Jan 007/010-005/007-005/005 VI. Geomagnetic Activity Probabilities 12 Jan-14 Jan A. Middle Latitudes Active 10/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01