:Product: 1028RSGA.txt :Issued: 2007 Oct 28 2202 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 301 Issued at 2200Z on 28 Oct 2007 IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity was very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods for 29 October due to the possible influence from a recurrent coronal hole. Quiet to unsettled conditions are expected for 30 October, with mostly quiet levels on 31 October as the coronal hole high speed stream subsides. III. Event Probabilities 29 Oct-31 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 28 Oct 068 Predicted 29 Oct-31 Oct 067/067/067 90 Day Mean 28 Oct 068 V. Geomagnetic A Indices Observed Afr/Ap 27 Oct 008/010 Estimated Afr/Ap 28 Oct 008/010 Predicted Afr/Ap 29 Oct-31 Oct 010/015-008/008-005/005 VI. Geomagnetic Activity Probabilities 29 Oct-31 Oct A. Middle Latitudes Active 20/15/10 Minor storm 15/10/05 Major-severe storm 05/01/01 B. High Latitudes Active 25/15/10 Minor storm 20/10/05 Major-severe storm 05/01/01