:Product: 0410RSGA.txt :Issued: 2007 Apr 10 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 100 Issued at 2200Z on 10 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar activity was very low. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods possible on 11 and 12 April. Conditions are expected to be mostly quiet on 13 April. III. Event Probabilities 11 Apr-13 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Apr 069 Predicted 11 Apr-13 Apr 070/070/070 90 Day Mean 10 Apr 076 V. Geomagnetic A Indices Observed Afr/Ap 09 Apr 008/009 Estimated Afr/Ap 10 Apr 008/012 Predicted Afr/Ap 11 Apr-13 Apr 008/008-008/010-005/005 VI. Geomagnetic Activity Probabilities 11 Apr-13 Apr A. Middle Latitudes Active 20/20/15 Minor storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/25/15 Minor storm 10/10/05 Major-severe storm 01/01/01