:Product: 0926RSGA.txt
:Issued: 2009 Sep 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 Report of Solar and Geophysical Activity
SDF Number 269 Issued at 2200Z on 26 Sep 2009
IA.  Analysis of Solar Active Regions and Activity from  25/2100Z
to 26/2100Z:  Solar activity was very low.  Region 1027 (N24W21) has
shown little change and remains a simple beta group.  Region 1026
(S34E05) is a spotless plage region today.  No significant flares
were observed during the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 25/2100Z to 26/2100Z:
The geomagnetic field was quiet.  An increase in solar wind speed,
density, and temperature were observed from the ACE spacecraft
around 26/1130Z.  These signatures are an indication of a possible
weak co-rotating interaction region.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled for day one (27 September) due to
effects from a coronal hole high speed stream.  Predominantly quiet
conditions are expected for days two and three (28-29 September).
III.  Event Probabilities 27 Sep-29 Sep
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           26 Sep 072
Predicted   27 Sep-29 Sep  072/070/070
90 Day Mean        26 Sep 068
V.  Geomagnetic A Indices
Observed Afr/Ap 25 Sep  001/002
Estimated Afr/Ap 26 Sep  003/005
Predicted Afr/Ap 27 Sep-29 Sep  006/007-005/005-005/005
VI.  Geomagnetic Activity Probabilities 27 Sep-29 Sep
A.  Middle Latitudes
Active                10/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01