:Product: 0616RSGA.txt :Issued: 2018 Jun 16 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 167 Issued at 2200Z on 16 Jun 2018 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (17 Jun, 18 Jun, 19 Jun). IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 312 km/s at 16/1607Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 508 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (17 Jun) and quiet to unsettled levels on days two and three (18 Jun, 19 Jun). III. Event probabilities 17 Jun-19 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 16 Jun 071 Predicted 17 Jun-19 Jun 072/072/072 90 Day Mean 16 Jun 070 V. Geomagnetic A Indices Observed Afr/Ap 15 Jun 006/004 Estimated Afr/Ap 16 Jun 004/004 Predicted Afr/Ap 17 Jun-19 Jun 005/005-008/008-008/008 VI. Geomagnetic Activity Probabilities 17 Jun-19 Jun A. Middle Latitudes Active 10/20/20 Minor Storm 01/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/20 Minor Storm 20/30/30 Major-severe storm 10/25/25