:Product: Report of Solar-Geophysical Activity :Issued: 2010 Jul 11 2201 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 192 Issued at 2200Z on 11 Jul 2010 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity was very low. Region 1087 (N19E44), a beta magnetic classification, produced several B-class flares during the past 24 hours. The region continues to show a slight growth in white light areal coverage and sunspot count. IB. Solar Activity Forecast: Solar activity is expected to be very low to low. A chance for a C-class flare and slight chance for a M-class event is possible from Region 1087. IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet for day one (12 July). Unsettled conditions with isolated active levels are expected for days two and three (13-14 July) due to a recurrent coronal hole high speed stream. III. Event Probabilities 12 Jul-14 Jul Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 11 Jul 083 Predicted 12 Jul-14 Jul 084/085/083 90 Day Mean 11 Jul 075 V. Geomagnetic A Indices Observed Afr/Ap 10 Jul 000/002 Estimated Afr/Ap 11 Jul 002/005 Predicted Afr/Ap 12 Jul-14 Jul 005/005-008/008-010/012 VI. Geomagnetic Activity Probabilities 12 Jul-14 Jul A. Middle Latitudes Active 05/10/20 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 05/20/30 Minor storm 01/05/10 Major-severe storm 01/01/01