:Product: 1004RSGA.txt :Issued: 2010 Oct 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 277 Issued at 2200Z on 04 Oct 2010 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity was low. Region 1109 (N21W93) produced a C2/1f event at 04/1635Z as it continues its rotation around the west limb of the Sun. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare. IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field was at quiet levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet with isolated unsettled conditions for days one and two (05-06 October). Any increase in activity is expected due to a possible weak coronal hole high speed stream. Day three (07 October) is expected to be at quiet levels. III. Event Probabilities 05 Oct-07 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 04 Oct 076 Predicted 05 Oct-07 Oct 075/075/075 90 Day Mean 04 Oct 081 V. Geomagnetic A Indices Observed Afr/Ap 03 Oct 001/003 Estimated Afr/Ap 04 Oct 001/002 Predicted Afr/Ap 05 Oct-07 Oct 007/007-007/007-005/005 VI. Geomagnetic Activity Probabilities 05 Oct-07 Oct A. Middle Latitudes Active 10/10/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/05 Minor storm 05/05/01 Major-severe storm 01/01/01