From: Space Weather Prediction Center (NOAA)
Posted: Wednesday, April 3, 2019
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 93 Issued at 2200Z on 03 Apr 2019 IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: 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 slight chance for a C-class flare on days one, two, and three (04 Apr, 05 Apr, 06 Apr). IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: 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 03/0627Z. Total IMF reached 7 nT at 03/0932Z. The maximum southward component of Bz reached -7 nT at 03/0427Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 477 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (04 Apr) and quiet to unsettled levels on days two and three (05 Apr, 06 Apr). III. Event probabilities 04 Apr-06 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 03 Apr 071 Predicted 04 Apr-06 Apr 070/070/070 90 Day Mean 03 Apr 071 V. Geomagnetic A Indices Observed Afr/Ap 02 Apr 005/005 Estimated Afr/Ap 03 Apr 009/013 Predicted Afr/Ap 04 Apr-06 Apr 009/012-008/010-007/010 VI. Geomagnetic Activity Probabilities 04 Apr-06 Apr A. Middle Latitudes Active 25/25/25 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/20 Minor Storm 30/30/30 Major-severe storm 35/25/25
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