:Product: 0411RSGA.txt :Issued: 2007 Apr 11 2203 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 101 Issued at 2200Z on 11 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity was very low. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to continue at very low levels. IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field was quiet to unsettled. Solar wind speed is currently elevated around 500 km/s due to the continued influence of a coronal hole high speed stream. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with the possibility of isolated active periods on 12 April. Conditions are expected to decrease to mostly quiet on 13 and 14 April. III. Event Probabilities 12 Apr-14 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 11 Apr 069 Predicted 12 Apr-14 Apr 070/070/070 90 Day Mean 11 Apr 076 V. Geomagnetic A Indices Observed Afr/Ap 10 Apr 006/007 Estimated Afr/Ap 11 Apr 008/008 Predicted Afr/Ap 12 Apr-14 Apr 008/010-005/005-005/005 VI. Geomagnetic Activity Probabilities 12 Apr-14 Apr A. Middle Latitudes Active 20/15/15 Minor storm 10/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/15/15 Minor storm 10/05/05 Major-severe storm 01/01/01