:Product: 0101RSGA.txt :Issued: 2009 Jan 01 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 001 Issued at 2200Z on 01 Jan 2009 IA. Analysis of Solar Active Regions and Activity from 31/2100Z to 01/2100Z: Solar activity was very low. No flares were detected. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z: Geomagnetic field activity was at quiet to unsettled levels. ACE solar wind measurements indicated Earth remained within a recurrent coronal hole high-speed stream. Solar wind velocities gradually decreased from 538 to 413 km/sec during the period. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet to active levels during day 1 (02 January). Activity is expected to decrease to quiet to unsettled levels during days 2 - 3 (03 - 04 January) as the high-speed stream subsides. III. Event Probabilities 02 Jan-04 Jan Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 01 Jan 069 Predicted 02 Jan-04 Jan 069/069/069 90 Day Mean 01 Jan 069 V. Geomagnetic A Indices Observed Afr/Ap 31 Dec 008/010 Estimated Afr/Ap 01 Jan 008/008 Predicted Afr/Ap 02 Jan-04 Jan 012/012-008/008-005/005 VI. Geomagnetic Activity Probabilities 02 Jan-04 Jan A. Middle Latitudes Active 20/15/05 Minor storm 10/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 30/20/10 Minor storm 15/10/05 Major-severe storm 01/01/01