:Product: 1210RSGA.txt :Issued: 2010 Dec 10 2215 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 344 Issued at 2200Z on 10 Dec 2010 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity was at very low levels. No significant changes were noted on the disk or limb. IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels for the next three days (11 - 13 December). IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field was at quiet levels. Observations from the ACE spacecraft indicated a steady change in the solar wind magnetic field structure from positive (away) to negative (toward) at about 10/0500Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at mostly unsettled levels with isolated active periods for the next three days (11 - 13 December) due to recurrent coronal hole high speed stream effects. III. Event Probabilities 11 Dec-13 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 10 Dec 088 Predicted 11 Dec-13 Dec 088/088/089 90 Day Mean 10 Dec 083 V. Geomagnetic A Indices Observed Afr/Ap 09 Dec 000/002 Estimated Afr/Ap 10 Dec 006/008 Predicted Afr/Ap 11 Dec-13 Dec 010/010-010/010-008/008 VI. Geomagnetic Activity Probabilities 11 Dec-13 Dec A. Middle Latitudes Active 20/20/15 Minor storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/20 Minor storm 10/10/05 Major-severe storm 01/01/01