:Product: 0914RSGA.txt :Issued: 2009 Sep 14 2201 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 257 Issued at 2200Z on 14 Sep 2009 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity was very low. No flares were observed. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic field was predominantly quiet. A single unsettled period was observed at all latitudes between 14/0000-0300Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels, with isolated active periods at high latitudes, for the next three days (15-17 September). The increased activity is expected as a recurrent coronal hole becomes geoeffective. III. Event Probabilities 15 Sep-17 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 14 Sep 069 Predicted 15 Sep-17 Sep 069/069/069 90 Day Mean 14 Sep 068 V. Geomagnetic A Indices Observed Afr/Ap 13 Sep 004/006 Estimated Afr/Ap 14 Sep 005/008 Predicted Afr/Ap 15 Sep-17 Sep 007/015-008/007-007/007 VI. Geomagnetic Activity Probabilities 15 Sep-17 Sep A. Middle Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/01 Major-severe storm 01/01/01