:Product: 0615RSGA.txt :Issued: 2013 Jun 15 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 166 Issued at 2200Z on 15 Jun 2013 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: 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 15/0400Z from Region 1774 (S18E58). There are currently 8 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low on days one and two (16 Jun, 17 Jun) and expected to be very low with a chance for a C-class flares on day three (18 Jun). IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: 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 478 km/s at 15/2057Z. Total IMF reached 7 nT at 15/0626Z. The maximum southward component of Bz reached -5 nT at 15/0610Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 885 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and three (16 Jun, 18 Jun) and quiet to unsettled levels on day two (17 Jun). III. Event probabilities 16 Jun-18 Jun Class M 05/05/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 15 Jun 111 Predicted 16 Jun-18 Jun 110/110/105 90 Day Mean 15 Jun 120 V. Geomagnetic A Indices Observed Afr/Ap 14 Jun 005/004 Estimated Afr/Ap 15 Jun 005/005 Predicted Afr/Ap 16 Jun-18 Jun 005/005-006/008-007/008 VI. Geomagnetic Activity Probabilities 16 Jun-18 Jun A. Middle Latitudes Active 10/15/15 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/25/25 Major-severe storm 15/20/20