:Product: 0907RSGA.txt
:Issued: 2018 Sep 07 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 250 Issued at 2200Z on 07 Sep 2018

IA.  Analysis of Solar Active Regions and Activity from 06/2100Z to
07/2100Z: 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 (08 Sep, 09 Sep, 10 Sep).

IIA.  Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 521 km/s at 07/1230Z. Total IMF reached 12 nT at
07/0601Z. The maximum southward component of Bz reached -8 nT at
07/0559Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1884 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on day one (08 Sep) and quiet levels
on days two and three (09 Sep, 10 Sep).

III.  Event probabilities 08 Sep-10 Sep
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           07 Sep 068
Predicted   08 Sep-10 Sep 068/068/068
90 Day Mean        07 Sep 070

V.  Geomagnetic A Indices
Observed Afr/Ap 06 Sep  005/005
Estimated Afr/Ap 07 Sep  008/011
Predicted Afr/Ap 08 Sep-10 Sep  009/010-006/005-006/005

VI.  Geomagnetic Activity Probabilities 08 Sep-10 Sep
A.  Middle Latitudes
Active                20/15/15
Minor Storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           25/25/25
Major-severe storm    30/20/20