From: Space Weather Prediction Center (NOAA)
Posted: Saturday, March 30, 2019
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 89 Issued at 2200Z on 30 Mar 2019 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: 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 (31 Mar, 01 Apr, 02 Apr). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 431 km/s at 30/0111Z. Total IMF reached 5 nT at 29/2355Z. The maximum southward component of Bz reached -4 nT at 29/2353Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 793 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (31 Mar, 01 Apr, 02 Apr). III. Event probabilities 31 Mar-02 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 Mar 069 Predicted 31 Mar-02 Apr 069/069/069 90 Day Mean 30 Mar 071 V. Geomagnetic A Indices Observed Afr/Ap 29 Mar 006/006 Estimated Afr/Ap 30 Mar 004/006 Predicted Afr/Ap 31 Mar-02 Apr 008/008-008/008-007/008 VI. Geomagnetic Activity Probabilities 31 Mar-02 Apr A. Middle Latitudes Active 20/20/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/30 Major-severe storm 30/30/30
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