:Product: 0104RSGA.txt :Issued: 2012 Jan 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 Report of Solar and Geophysical Activity SDF Number 004 Issued at 2200Z on 04 Jan 2012 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity was low. Regions 1386 (S17W87) and 1392 (N20W04) each produced C1 x-ray flares. IB. Solar Activity Forecast: Solar activity is expected to be very low to low for the next 3 days (5-7 January). IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet on day 1 (5 January). Conditions are expected to increase on day 2 (6 January), with unsettled conditions possible associated with a forecasted solar sector boundary crossing (SSBC). On day 3 (7 January), the onset of a coronal hole high speed stream (CH HSS) is expected to produce unsettled and active conditions, with a possible minor storm at high latitudes. III. Event Probabilities 05 Jan-07 Jan Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Jan 136 Predicted 05 Jan-07 Jan 140/140/135 90 Day Mean 04 Jan 144 V. Geomagnetic A Indices Observed Afr/Ap 03 Jan 009/008 Estimated Afr/Ap 04 Jan 000/003 Predicted Afr/Ap 05 Jan-07 Jan 004/005-007/008-013/010 VI. Geomagnetic Activity Probabilities 05 Jan-07 Jan A. Middle Latitudes Active 05/10/30 Minor storm 01/01/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 20/20/35 Major-severe storm 10/10/40