:Product: 0705RSGA.txt :Issued: 2011 Jul 05 2200 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 186 Issued at 2200Z on 05 Jul 2011 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity remained at very low levels. Several low-level B-class flares occurred during the period from Regions 1242 (N18, L=056) and 1243 (N16W34). Region 1243 showed an increase in spots and area and was classified as a Cso-beta group. Region 1244 (N15W67) showed a decrease in spots and area and was classified as a Dso group with a Beta-gamma magnetic structure. No new regions were numbered. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for an isolated C-class flare for the next three days (06-08 July). IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was at quiet to minor storm levels. Minor storm levels were observed between 05/0300-0600Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (06 July). Quiet to unsettled levels, with isolated active levels, are expected late on day two (07 July) and day three (08 July). The increase in activity is due to a recurrent coronal hole high-speed stream and a possible CME passage from the partial-halo CME observed on LASCO C3 at 03/0142Z. III. Event Probabilities 06 Jul-08 Jul Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 05 Jul 085 Predicted 06 Jul-08 Jul 084/083/080 90 Day Mean 05 Jul 100 V. Geomagnetic A Indices Observed Afr/Ap 04 Jul 007/011 Estimated Afr/Ap 05 Jul 007/014 Predicted Afr/Ap 06 Jul-08 Jul 005/005-008/008-010/010 VI. Geomagnetic Activity Probabilities 06 Jul-08 Jul A. Middle Latitudes Active 10/15/35 Minor storm 01/05/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/40 Minor storm 01/10/15 Major-severe storm 01/01/05