:Product: 20040905RSGA.txt :Issued: 2004 Sep 05 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 249 Issued at 2200Z on 05 Sep 2004 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity has been very low. A 9 degree long filament disappeared from N22W30 sometime after 04/1625 UTC and before 05/0536 UTC. The SOHO/LASCO imagery observed filament movement on EIT at 05/0512 UTC and a CME on C2 around 05/0654 UTC, which seems to correspond with this event disappearance. At this time the event appears to be directed away from the Earth. Two new regions were numbered today as Region 669 (S06E35) and Region 670 (S14E34). IB. Solar Activity Forecast: Solar activity is expected to be very low to low. IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was quiet to unsettled. The solar wind has undergone some changes in the past 24 hours. Shortly before 05/0600 UTC the IMF Bz started southward oscillations and a gradual increase in velocity and temperature began. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active conditions. III. Event Probabilities 06 Sep-08 Sep Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 05 Sep 103 Predicted 06 Sep-08 Sep 105/110/110 90 Day Mean 05 Sep 110 V. Geomagnetic A Indices Observed Afr/Ap 04 Sep 002/004 Estimated Afr/Ap 05 Sep 008/008 Predicted Afr/Ap 06 Sep-08 Sep 008/008-008/010-008/010 VI. Geomagnetic Activity Probabilities 06 Sep-08 Sep A. Middle Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01