:Product: 0704RSGA.txt :Issued: 2011 Jul 04 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 185 Issued at 2200Z on 04 Jul 2011 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity was very low. Region 1242 (N18W82) produced two low-level B-class flares at 04/1252Z and 04/1656Z. Region 1244 (N16W53) showed an increase in area and was classified as a Dao spot group with a beta-gamma magnetic structure. Region 1243 (N17W19) showed a slight decrease in area and spots and was classified as a Cso-beta group. 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 (05-07 July). IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field was at quiet to unsettled levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at predominantly quiet levels on days one and two (05-06 July). Quiet to unsettled levels, with isolated active levels at high latitudes, are expected on day three (07 July). The increase in activity is due to an expected 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 05 Jul-07 Jul Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 04 Jul 085 Predicted 05 Jul-07 Jul 084/082/080 90 Day Mean 04 Jul 100 V. Geomagnetic A Indices Observed Afr/Ap 03 Jul 006/008 Estimated Afr/Ap 04 Jul 008/010 Predicted Afr/Ap 05 Jul-07 Jul 005/005-005/005-008/008 VI. Geomagnetic Activity Probabilities 05 Jul-07 Jul A. Middle Latitudes Active 10/10/15 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/20 Minor storm 01/01/10 Major-severe storm 01/01/01