:Product: 0930RSGA.txt
:Issued: 2020 Sep 30 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 274 Issued at 2200Z on 30 Sep 2020

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 (01 Oct, 02 Oct, 03 Oct).

IIA.  Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 642 km/s at 30/1435Z. Total IMF reached 5
nT at 30/0242Z. The maximum southward component of Bz reached -4 nT at
29/2346Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 29293 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (01 Oct), quiet to unsettled
levels on day two (02 Oct) and quiet levels on day three (03 Oct).

III.  Event probabilities 01 Oct-03 Oct
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           30 Sep 073
Predicted   01 Oct-03 Oct 074/074/074
90 Day Mean        30 Sep 071

V.  Geomagnetic A Indices
Observed Afr/Ap 29 Sep  014/014
Estimated Afr/Ap 30 Sep  017/020
Predicted Afr/Ap 01 Oct-03 Oct  013/015-011/010-006/005

VI.  Geomagnetic Activity Probabilities 01 Oct-03 Oct
A.  Middle Latitudes
Active                30/10/05
Minor Storm           15/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/20/15
Minor Storm           30/20/15
Major-severe storm    45/10/10