:Product: 0324RSGA.txt :Issued: 2019 Mar 24 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 83 Issued at 2200Z on 24 Mar 2019 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: 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 with a chance for a C-class flares on day one (25 Mar) and expected to be very low on days two and three (26 Mar, 27 Mar). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 297 km/s at 24/2052Z. Total IMF reached 5 nT at 24/2100Z. The maximum southward component of Bz reached -1 nT at 24/0538Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 955 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and three (25 Mar, 27 Mar) and quiet to unsettled levels on day two (26 Mar). III. Event probabilities 25 Mar-27 Mar Class M 05/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Mar 075 Predicted 25 Mar-27 Mar 073/071/070 90 Day Mean 24 Mar 071 V. Geomagnetic A Indices Observed Afr/Ap 23 Mar 002/001 Estimated Afr/Ap 24 Mar 005/007 Predicted Afr/Ap 25 Mar-27 Mar 014/015-008/008-013/012 VI. Geomagnetic Activity Probabilities 25 Mar-27 Mar A. Middle Latitudes Active 30/10/30 Minor Storm 10/01/10 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor Storm 30/20/30 Major-severe storm 30/20/45