:Product: 0925RSGA.txt :Issued: 2007 Sep 25 2203 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 268 Issued at 2200Z on 25 Sep 2007 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. The visible solar disk remains spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled 26 - 27 September. On 28 September conditions are forecast to be unsettled to active as another coronal hole high speed stream rotates into a geoeffective position. III. Event Probabilities 26 Sep-28 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Sep 066 Predicted 26 Sep-28 Sep 067/067/067 90 Day Mean 25 Sep 070 V. Geomagnetic A Indices Observed Afr/Ap 24 Sep 007/010 Estimated Afr/Ap 25 Sep 006/007 Predicted Afr/Ap 26 Sep-28 Sep 004/005-006/008-012/015 VI. Geomagnetic Activity Probabilities 26 Sep-28 Sep A. Middle Latitudes Active 15/15/40 Minor storm 05/05/15 Major-severe storm 01/01/05 B. High Latitudes Active 20/20/45 Minor storm 10/10/20 Major-severe storm 01/01/10