:Product: 0613RSGA.txt :Issued: 2014 Jun 13 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 164 Issued at 2200Z on 13 Jun 2014 IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M3 event observed at 12/2216Z from Region 2085 (S20W58). There are currently 11 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 days one, two, and three (14 Jun, 15 Jun, 16 Jun). IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: 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 398 km/s at 12/2107Z. Total IMF reached 8 nT at 13/1327Z. The maximum southward component of Bz reached -6 nT at 13/1213Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 227 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (14 Jun), quiet to unsettled levels on day two (15 Jun) and quiet levels on day three (16 Jun). Protons have a chance of crossing threshold on days one, two, and three (14 Jun, 15 Jun, 16 Jun). III. Event probabilities 14 Jun-16 Jun Class M 70/70/70 Class X 30/30/30 Proton 30/30/30 PCAF green IV. Penticton 10.7 cm Flux Observed 13 Jun 153 Predicted 14 Jun-16 Jun 150/140/135 90 Day Mean 13 Jun 139 V. Geomagnetic A Indices Observed Afr/Ap 12 Jun 005/005 Estimated Afr/Ap 13 Jun 006/008 Predicted Afr/Ap 14 Jun-16 Jun 016/020-009/010-007/008 VI. Geomagnetic Activity Probabilities 14 Jun-16 Jun A. Middle Latitudes Active 35/20/15 Minor Storm 25/05/05 Major-severe storm 05/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/10/25 Major-severe storm 25/05/20