:Product: 0615RSGA.txt :Issued: 2014 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 2014 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 15/1139Z from Region 2085 (S18W97). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a chance for X-class flares on day one (16 Jun) and likely to be moderate with a slight chance for an X-class flare on day two (17 Jun) and expected to be low with a chance for M-class flares and a slight chance for an X-class flare 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 413 km/s at 15/0831Z. Total IMF reached 5 nT at 15/1649Z. The maximum southward component of Bz reached -5 nT at 15/0807Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (16 Jun, 17 Jun) and mostly quiet levels on day three (18 Jun). Protons have a chance of crossing threshold on day one (16 Jun) and have a slight chance of crossing threshold on day two and three (17-18 Jun). III. Event probabilities 16 Jun-18 Jun Class M 55/55/50 Class X 25/20/15 Proton 25/20/15 PCAF green IV. Penticton 10.7 cm Flux Observed 15 Jun 130 Predicted 16 Jun-18 Jun 130/130/130 90 Day Mean 15 Jun 139 V. Geomagnetic A Indices Observed Afr/Ap 14 Jun 008/009 Estimated Afr/Ap 15 Jun 005/006 Predicted Afr/Ap 16 Jun-18 Jun 009/010-008/008-007/008 VI. Geomagnetic Activity Probabilities 16 Jun-18 Jun A. Middle Latitudes Active 20/20/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/20/20 Major-severe storm 30/20/15