:Product: 0610RSGA.txt :Issued: 2013 Jun 10 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 161 Issued at 2200Z on 10 Jun 2013 IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: 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 10/1424Z from Region 1765 (N09W50). There are currently 1 numbered sunspot regions 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 and two (11 Jun, 12 Jun) and expected to be very low with a chance for a C-class flares on day three (13 Jun). IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 420 km/s at 10/1553Z. Total IMF reached 10 nT at 10/0342Z. The maximum southward component of Bz reached -8 nT at 10/0310Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1479 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (11 Jun, 12 Jun, 13 Jun). III. Event probabilities 11 Jun-13 Jun Class M 10/10/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Jun 093 Predicted 11 Jun-13 Jun 095/100/105 90 Day Mean 10 Jun 122 V. Geomagnetic A Indices Observed Afr/Ap 09 Jun 008/008 Estimated Afr/Ap 10 Jun 012/014 Predicted Afr/Ap 11 Jun-13 Jun 005/005-006/005-005/005 VI. Geomagnetic Activity Probabilities 11 Jun-13 Jun A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/20 Major-severe storm 15/15/15