:Product: 20041004RSGA.txt :Issued: 2004 Oct 04 2200 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 278 Issued at 2200Z on 04 Oct 2004 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar Activity was low. A C2.6 flare occurred at 04/1325 UTC from a region on the east limb at S11. A coronal mass ejection was associated with this event. IB. Solar Activity Forecast: Solar activity is expected to be very low with a possibility for C-class flares. IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field was quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. III. Event Probabilities 05 Oct-07 Oct Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Oct 091 Predicted 05 Oct-07 Oct 095/100/105 90 Day Mean 04 Oct 112 V. Geomagnetic A Indices Observed Afr/Ap 03 Oct 007/015 Estimated Afr/Ap 04 Oct 008/010 Predicted Afr/Ap 05 Oct-07 Oct 008/010-005/005-005/005 VI. Geomagnetic Activity Probabilities 05 Oct-07 Oct A. Middle Latitudes Active 20/15/15 Minor storm 15/10/10 Major-severe storm 05/05/05 B. High Latitudes Active 25/20/20 Minor storm 15/15/15 Major-severe storm 05/05/05