:Product: 1011RSGA.txt :Issued: 2011 Oct 11 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 284 Issued at 2200Z on 11 Oct 2011 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity has been at very low levels for the past 24 hours. Region 1313 (S15W13) remains the most magnetically complex region, but has failed to produce any notable activity. Early in the period, two new regions rotated onto the visible disk, around the southeast limb, and were numbered as Region 1316 (S12E56) and Region 1317 (S26E68). IB. Solar Activity Forecast: Solar activity is expected to be at very low to low levels for the next three days (12-14 October). IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field has been at predominantly quiet levels for the past 24 hours. Solar wind speeds, as measured by the ACE spacecraft did show an increase from 320 km/s to around 410 km/s during the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at mostly quiet levels for the next three days (12-14 October). III. Event Probabilities 12 Oct-14 Oct Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Oct 130 Predicted 12 Oct-14 Oct 130/130/125 90 Day Mean 11 Oct 115 V. Geomagnetic A Indices Observed Afr/Ap 10 Oct 002/003 Estimated Afr/Ap 11 Oct 005/007 Predicted Afr/Ap 12 Oct-14 Oct 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 12 Oct-14 Oct A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/11