:Product: 0618RSGA.txt :Issued: 2019 Jun 18 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 169 Issued at 2200Z on 18 Jun 2019 IA. Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (19 Jun, 20 Jun, 21 Jun). IIA. Geophysical Activity Summary 17/2100Z to 18/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 338 km/s at 18/1150Z. Total IMF reached 6 nT at 17/2253Z. The maximum southward component of Bz reached -4 nT at 18/1147Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (19 Jun) and quiet levels on days two and three (20 Jun, 21 Jun). III. Event probabilities 19 Jun-21 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 18 Jun 067 Predicted 19 Jun-21 Jun 067/067/067 90 Day Mean 18 Jun 071 V. Geomagnetic A Indices Observed Afr/Ap 17 Jun 005/003 Estimated Afr/Ap 18 Jun 004/005 Predicted Afr/Ap 19 Jun-21 Jun 008/008-006/005-006/005 VI. Geomagnetic Activity Probabilities 19 Jun-21 Jun A. Middle Latitudes Active 20/15/10 Minor Storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor Storm 25/20/15 Major-severe storm 20/15/15