:Product: 0906RSGA.txt :Issued: 2010 Sep 06 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 249 Issued at 2200Z on 06 Sep 2010 IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: Solar activity has been low. Region 1105 (N19W64) produced a C2/Sf flare at 06/1459Z. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic field has been quiet to active. An isolated active period occurred between 06/0300-0600Z. Solar wind, as measured at the ACE spacecraft, indicated a 10 nT enhancement of the total field with the Bz component reaching around -8 nT during the enhanced activity interval. The greater than 2 MeV electron flux at geosynchronous orbit briefly reached high levels during the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the two days (07-08 September), and quiet to unsettled on day three (09 September). III. Event Probabilities 07 Sep-09 Sep Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 06 Sep 080 Predicted 07 Sep-09 Sep 079/079/078 90 Day Mean 06 Sep 078 V. Geomagnetic A Indices Observed Afr/Ap 05 Sep 004/004 Estimated Afr/Ap 06 Sep 005/005 Predicted Afr/Ap 07 Sep-09 Sep 005/005-005/005-005/008 VI. Geomagnetic Activity Probabilities 07 Sep-09 Sep A. Middle Latitudes Active 10/10/10 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01