From: Space Weather Prediction Center (NOAA)
Posted: Saturday, February 23, 2019
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 54 Issued at 2200Z on 23 Feb 2019
IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: 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 (24 Feb, 25 Feb, 26 Feb).
IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 426 km/s at 22/2227Z.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (24 Feb, 25 Feb, 26 Feb).
III. Event probabilities 24 Feb-26 Feb
Class M 01/01/01
Class X 01/01/01
IV. Penticton 10.7 cm Flux
Observed 23 Feb 071
Predicted 24 Feb-26 Feb 071/071/071
90 Day Mean 23 Feb 071
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 003/004
Estimated Afr/Ap 23 Feb 002/003
Predicted Afr/Ap 24 Feb-26 Feb 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 24 Feb-26 Feb
A. Middle Latitudes
Minor Storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Minor Storm 15/15/15
Major-severe storm 10/10/10
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