From: Space Weather Prediction Center (NOAA)
Posted: Sunday, March 31, 2019
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 90 Issued at 2200Z on 31 Mar 2019 IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: 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 (01 Apr, 02 Apr, 03 Apr). IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 428 km/s at 31/1704Z. Total IMF reached 7 nT at 31/0201Z. The maximum southward component of Bz reached -6 nT at 31/0525Z. Electrons greater than 2 MeV at geosynchronous orbit reached apeak level of 806 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (01 Apr, 02 Apr, 03 Apr). III. Event probabilities 01 Apr-03 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 31 Mar 070 Predicted 01 Apr-03 Apr 070/070/070 90 Day Mean 31 Mar 071 V. Geomagnetic A Indices Observed Afr/Ap 30 Mar 003/003 Estimated Afr/Ap 31 Mar 008/010 Predicted Afr/Ap 01 Apr-03 Apr 007/010-007/008-007/008 VI. Geomagnetic Activity Probabilities 01 Apr-03 Apr A. Middle Latitudes Active 20/15/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/25/30 Major-severe storm 30/25/30
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