:Product: 0610RSGA.txt :Issued: 2015 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 2015 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 C6 event observed at 10/0226Z. 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 (11 Jun, 12 Jun, 13 Jun). IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: 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 691 km/s at 10/0943Z. Total IMF reached 6 nT at 10/1335Z. The maximum southward component of Bz reached -4 nT at 10/0512Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 4602 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (11 Jun), quiet to minor storm levels on day two (12 Jun) and quiet to active levels on day three (13 Jun). III. Event probabilities 11 Jun-13 Jun Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 10 Jun 135 Predicted 11 Jun-13 Jun 135/135/135 90 Day Mean 10 Jun 125 V. Geomagnetic A Indices Observed Afr/Ap 09 Jun NA/017 Estimated Afr/Ap 10 Jun 010/010 Predicted Afr/Ap 11 Jun-13 Jun 008/008-015/020-011/014 VI. Geomagnetic Activity Probabilities 11 Jun-13 Jun A. Middle Latitudes Active 15/35/35 Minor Storm 05/25/10 Major-severe storm 01/05/01 B. High Latitudes Active 15/10/15 Minor Storm 25/30/30 Major-severe storm 25/55/45