:Product: 0913RSGA.txt
:Issued: 2020 Sep 13 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 257 Issued at 2200Z on 13 Sep 2020

IA.  Analysis of Solar Active Regions and Activity from 12/2100Z to
13/2100Z: 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 (14 Sep, 15 Sep, 16 Sep).

IIA.  Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 348 km/s at 13/2018Z. Total IMF reached 7 nT at
13/1830Z. The maximum southward component of Bz reached -6 nT at
13/1934Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1508 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on days one, two, and three (14 Sep, 15 Sep, 16
Sep).

III.  Event probabilities 14 Sep-16 Sep
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           13 Sep 070
Predicted   14 Sep-16 Sep 070/070/070
90 Day Mean        13 Sep 070

V.  Geomagnetic A Indices
Observed Afr/Ap 12 Sep  006/006
Estimated Afr/Ap 13 Sep  004/005
Predicted Afr/Ap 14 Sep-16 Sep  006/005-006/005-006/005

VI.  Geomagnetic Activity Probabilities 14 Sep-16 Sep
A.  Middle Latitudes
Active                05/05/05
Minor Storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           15/15/15
Major-severe storm    10/10/10