:Product: 1204RSGA.txt :Issued: 2012 Dec 04 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 339 Issued at 2200Z on 04 Dec 2012 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: 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 very low to low levels on days one, two, and three (05 Dec, 06 Dec, 07 Dec). IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: 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 462 km/s at 04/1430Z. Total IMF reached 11.7 nT at 04/0005Z. The maximum southward component of Bz reached -10.9 nT at 04/0447Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels for the next three days (05 Dec, 06 Dec, 07 Dec). III. Event probabilities 05 Dec-07 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Dec 096 Predicted 05 Dec-07 Dec 100/105/110 90 Day Mean 04 Dec 120 V. Geomagnetic A Indices Observed Afr/Ap 03 Dec 003/003 Estimated Afr/Ap 04 Dec 003/004 Predicted Afr/Ap 05 Dec-07 Dec 004/005-004/005-005/005 VI. Geomagnetic Activity Probabilities 05 Dec-07 Dec A. Middle Latitudes Active 05/05/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 10/10/10 Major-severe storm 05/05/05