:Product: 0826RSGA.txt
:Issued: 2016 Aug 26 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 239 Issued at 2200Z on 26 Aug 2016

IA.  Analysis of Solar Active Regions and Activity from 25/2100Z to
26/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 3 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (27 Aug,
28 Aug, 29 Aug).

IIA.  Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 551 km/s at 25/2249Z. Total IMF reached 6
nT at 25/2313Z. The maximum southward component of Bz reached -6 nT at
25/2257Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1334 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on day one (27 Aug), quiet to unsettled levels on
day two (28 Aug) and unsettled to minor storm levels on day three (29
Aug).

III.  Event probabilities 27 Aug-29 Aug
Class M    05/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           26 Aug 082
Predicted   27 Aug-29 Aug 082/080/078
90 Day Mean        26 Aug 084

V.  Geomagnetic A Indices
Observed Afr/Ap 25 Aug  009/010
Estimated Afr/Ap 26 Aug  007/007
Predicted Afr/Ap 27 Aug-29 Aug  006/005-008/008-020/030

VI.  Geomagnetic Activity Probabilities 27 Aug-29 Aug
A.  Middle Latitudes
Active                10/15/40
Minor Storm           01/05/15
Major-severe storm    01/01/05
B.  High Latitudes
Active                15/15/15
Minor Storm           15/20/20
Major-severe storm    10/25/30