:Product: 0608RSGA.txt :Issued: 2013 Jun 08 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 159 Issued at 2200Z on 08 Jun 2013 IA. Analysis of Solar Active Regions and Activity from 07/2100Z to 08/2100Z: Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a M5 event observed at 07/2249Z from Region 1762 (S28W87). There is currently 1 numbered sunspot region on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares and a slight chance for an M-class flare on days one, two, and three (09 Jun, 10 Jun, 11 Jun). IIA. Geophysical Activity Summary 07/2100Z to 08/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 476 km/s at 08/0759Z. Total IMF reached 10 nT at 07/2154Z. The maximum southward component of Bz reached -7 nT at 08/0136Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2815 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (09 Jun), quiet to active levels on day two (10 Jun) and quiet levels on day three (11 Jun). III. Event probabilities 09 Jun-11 Jun Class M 10/10/10 Class X 01/01/01 Proton 05/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 08 Jun 103 Predicted 09 Jun-11 Jun 100/100/095 90 Day Mean 08 Jun 122 V. Geomagnetic A Indices Observed Afr/Ap 07 Jun 026/042 Estimated Afr/Ap 08 Jun 009/009 Predicted Afr/Ap 09 Jun-11 Jun 014/018-008/010-005/005 VI. Geomagnetic Activity Probabilities 09 Jun-11 Jun A. Middle Latitudes Active 40/20/10 Minor Storm 20/05/01 Major-severe storm 05/01/01 B. High Latitudes Active 10/15/15 Minor Storm 25/30/15 Major-severe storm 60/30/10