:Product: 0912RSGA.txt :Issued: 2009 Sep 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 255 Issued at 2200Z on 12 Sep 2009 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity was very low. No flares were observed. The visible disk remained spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet, with isolated unsettled periods for the next three days (13-15 September) as a coronal hole is expected to become geoeffective. III. Event Probabilities 13 Sep-15 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 12 Sep 069 Predicted 13 Sep-15 Sep 069/068/068 90 Day Mean 12 Sep 068 V. Geomagnetic A Indices Observed Afr/Ap 11 Sep 002/004 Estimated Afr/Ap 12 Sep 003/005 Predicted Afr/Ap 13 Sep-15 Sep 005/007-007/007-007/010 VI. Geomagnetic Activity Probabilities 13 Sep-15 Sep A. Middle Latitudes Active 05/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/15/15 Minor storm 01/01/01 Major-severe storm 01/01/01