:Product: 0120RSGA.txt :Issued: 2008 Jan 20 2203 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 020 Issued at 2200Z on 20 Jan 2008 IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity was very low. The visible disk remains spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field was quiet to unsettled. Solar wind speed remains elevated due to the continued influence of a geoeffective coronal hole high speed stream. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels for the forecast period of 21-23 January. III. Event Probabilities 21 Jan-23 Jan Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 20 Jan 070 Predicted 21 Jan-23 Jan 070/070/070 90 Day Mean 20 Jan 074 V. Geomagnetic A Indices Observed Afr/Ap 19 Jan 006/009 Estimated Afr/Ap 20 Jan 005/005 Predicted Afr/Ap 21 Jan-23 Jan 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 21 Jan-23 Jan A. Middle Latitudes Active 10/10/05 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/10 Minor storm 10/10/10 Major-severe storm 01/01/01