:Product: 0913RSGA.txt
:Issued: 2016 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 2016

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 2 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be very low
with a slight chance for a C-class flare 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 329 km/s at 12/2247Z. Total IMF reached 7 nT at
13/0107Z. The maximum southward component of Bz reached -6 nT at
13/2100Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 5911 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on day one (14 Sep) and quiet to unsettled levels
on days two and three (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 086
Predicted   14 Sep-16 Sep 085/080/080
90 Day Mean        13 Sep 085

V.  Geomagnetic A Indices
Observed Afr/Ap 12 Sep  006/004
Estimated Afr/Ap 13 Sep  006/005
Predicted Afr/Ap 14 Sep-16 Sep  006/006-007/008-007/008

VI.  Geomagnetic Activity Probabilities 14 Sep-16 Sep
A.  Middle Latitudes
Active                10/10/10
Minor Storm           05/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           20/15/15
Major-severe storm    15/15/15