:Product: 0626RSGA.txt :Issued: 2007 Jun 26 2202 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 177 Issued at 2200Z on 26 Jun 2007 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was very low. Region 961 (S11E60) remains an Hsx alpha sunspot group. No significant flare activity occurred during the last 24 hours. IB. Solar Activity Forecast: Solar activity is expected to be very low, with a slight chance for C-class flares late in the period. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field was quiet to unsettled. 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 range from quiet to unsettled. Active periods are possible, particularly at high latitudes, on 29 June. III. Event Probabilities 27 Jun-29 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 26 Jun 071 Predicted 27 Jun-29 Jun 075/080/080 90 Day Mean 26 Jun 074 V. Geomagnetic A Indices Observed Afr/Ap 25 Jun 003/005 Estimated Afr/Ap 26 Jun 004/005 Predicted Afr/Ap 27 Jun-29 Jun 003/005-005/005-006/008 VI. Geomagnetic Activity Probabilities 27 Jun-29 Jun A. Middle Latitudes Active 10/10/15 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/25 Minor storm 05/05/15 Major-severe storm 01/01/01