:Product: Report of Solar-Geophysical Activity
:Issued: 2020 Feb 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 55 Issued at 2200Z on 24 Feb 2020

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 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 (25 Feb, 26 Feb, 27 Feb).

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 453 km/s at 24/0648Z. Total IMF reached 5 nT at
23/2104Z. The maximum southward component of Bz reached -4 nT at
23/2139Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1568 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on day one (25 Feb) and quiet to unsettled levels
on days two and three (26 Feb, 27 Feb).

III.  Event probabilities 25 Feb-27 Feb
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           24 Feb 070
Predicted   25 Feb-27 Feb 070/070/070
90 Day Mean        24 Feb 071

V.  Geomagnetic A Indices
Observed Afr/Ap 23 Feb  004/003
Estimated Afr/Ap 24 Feb  004/006
Predicted Afr/Ap 25 Feb-27 Feb  006/005-006/008-008/008

VI.  Geomagnetic Activity Probabilities 25 Feb-27 Feb
A.  Middle Latitudes
Active                10/20/20
Minor Storm           01/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           20/25/25
Major-severe storm    20/25/25