:Product: 0603RSGA.txt :Issued: 2013 Jun 03 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 154 Issued at 2200Z on 03 Jun 2013 IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 03/0725Z from Region 1762 (S29W35). There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (04 Jun, 05 Jun, 06 Jun). IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: 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 779 km/s at 03/0647Z. Total IMF reached 5 nT at 03/0227Z. The maximum southward component of Bz reached -3 nT at 03/2011Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 8298 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (04 Jun, 05 Jun) and quiet to unsettled levels on day three (06 Jun). III. Event probabilities 04 Jun-06 Jun Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 03 Jun 112 Predicted 04 Jun-06 Jun 115/120/125 90 Day Mean 03 Jun 123 V. Geomagnetic A Indices Observed Afr/Ap 02 Jun 016/022 Estimated Afr/Ap 03 Jun 008/010 Predicted Afr/Ap 04 Jun-06 Jun 007/008-005/005-008/008 VI. Geomagnetic Activity Probabilities 04 Jun-06 Jun A. Middle Latitudes Active 15/10/15 Minor Storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/20/25 Major-severe storm 20/15/25