:Product: 0807RSGA.txt :Issued: 2014 Aug 07 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 Solar Geophysical Activity Report and Forecast SDF Number 219 Issued at 2200Z on 07 Aug 2014 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 07/0552Z from Region 2130 (S08W54). There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (08 Aug, 09 Aug, 10 Aug). IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 456 km/s at 06/2102Z. Total IMF reached 5 nT at 07/2007Z. The maximum southward component of Bz reached -4 nT at 07/1741Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 907 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (08 Aug, 10 Aug) and quiet levels on day two (09 Aug). III. Event probabilities 08 Aug-10 Aug Class M 20/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 07 Aug 136 Predicted 08 Aug-10 Aug 130/125/125 90 Day Mean 07 Aug 130 V. Geomagnetic A Indices Observed Afr/Ap 06 Aug 007/008 Estimated Afr/Ap 07 Aug 005/005 Predicted Afr/Ap 08 Aug-10 Aug 007/008-006/005-007/008 VI. Geomagnetic Activity Probabilities 08 Aug-10 Aug A. Middle Latitudes Active 15/10/15 Minor Storm 05/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/15/25 Major-severe storm 15/10/25