:Product: 1012RSGA.txt :Issued: 2009 Oct 12 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 285 Issued at 2200Z on 12 Oct 2009 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity was very low. No significant flare activity occurred. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: Geomagnetic field activity was at quiet levels. The recurrent coronal hole high-speed stream that commenced yesterday began to gradually subside early in the period. Velocities gradually decreased from 435 to 350 km/sec during the period. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet levels during days 1 - 2 (13 - 14 October). Activity is expected to increase to quiet to unsettled levels on day 3 (15 October) as an equatorward extension of the northern crown coronal hole begins to influence the field. III. Event Probabilities 13 Oct-15 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 12 Oct 070 Predicted 13 Oct-15 Oct 070/070/070 90 Day Mean 12 Oct 069 V. Geomagnetic A Indices Observed Afr/Ap 11 Oct 007/006 Estimated Afr/Ap 12 Oct 002/003 Predicted Afr/Ap 13 Oct-15 Oct 005/005-005/005-007/007 VI. Geomagnetic Activity Probabilities 13 Oct-15 Oct A. Middle Latitudes Active 05/05/10 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/15 Minor storm 01/01/01 Major-severe storm 01/01/01