:Product: 1125RSGA.txt :Issued: 2009 Nov 25 2200 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 329 Issued at 2200Z on 25 Nov 2009 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar Activity was very low. No flares occurred during the past 24 hours. 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 mostly quiet with two isolated unsettled periods, 25/0000-0600Z. A secondary solar wind data source, SOHO/MTOF, indicated the earth is currently in a high speed stream, preceded by a co-rotating interaction region detected by the ACE spacecraft early yesterday. Wind speeds, as measured by SOHO/MTOF, averaged 430-470 km/sec during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled on day one (26 Nov) based on recurrence. Quiet conditions are expected to return on days two and three (27-28 Nov). III. Event Probabilities 26 Nov-28 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Nov 074 Predicted 26 Nov-28 Nov 074/073/071 90 Day Mean 25 Nov 073 V. Geomagnetic A Indices Observed Afr/Ap 24 Nov 003/006 Estimated Afr/Ap 25 Nov 007/005 Predicted Afr/Ap 26 Nov-28 Nov 007/005-007/005-007/005 VI. Geomagnetic Activity Probabilities 26 Nov-28 Nov A. Middle Latitudes Active 20/10/05 Minor storm 10/05/01 Major-severe storm 05/01/01 B. High Latitudes Active 25/15/05 Minor storm 15/05/01 Major-severe storm 05/01/01