:Product: 0529RSGA.txt :Issued: 2015 May 29 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 149 Issued at 2200Z on 29 May 2015 IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 2 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare on day one (30 May) and expected to be very low with a chance for a C-class flares on days two and three (31 May, 01 Jun). IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: 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 443 km/s at 29/1843Z. Total IMF reached 9 nT at 29/0224Z. The maximum southward component of Bz reached -6 nT at 29/1219Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (30 May) and quiet levels on days two and three (31 May, 01 Jun). III. Event probabilities 30 May-01 Jun Class M 01/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 29 May 092 Predicted 30 May-01 Jun 090/095/100 90 Day Mean 29 May 126 V. Geomagnetic A Indices Observed Afr/Ap 28 May 008/008 Estimated Afr/Ap 29 May 008/008 Predicted Afr/Ap 30 May-01 Jun 007/008-006/005-006/005 VI. Geomagnetic Activity Probabilities 30 May-01 Jun A. Middle Latitudes Active 20/10/10 Minor Storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/20 Minor Storm 30/20/20 Major-severe storm 25/10/10