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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Wed, 26 Nov 2008 22:02:10 -0000
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Subject: Report of Solar Geophysical Activity (RSGA)
X-asg-orig-subj: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2008 Nov 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 331 Issued at 2200Z on 26 Nov 2008
IA. Analysis of Solar Active Regions and Activity from 25/2100Z
to 26/2100Z: Solar activity was very low. No flares were observed
during the past 24 hours. The visible disk was spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z:
The geomagnetic field ranged from quiet to active conditions. Solar
wind observations from the ACE spacecraft indicated a continued
influence of the coronal hole high speed stream. Solar wind
velocities reached a maximum of 651 km/s near the end of the
period. The Interplanetary Magnetic Field (IMF) Bt ranged from +6 to
-5.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled on 26 November. Quiet conditions
should return on 26-27 November as the high speed solar stream
subsides.
III. Event Probabilities 27 Nov-29 Nov
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 26 Nov 068
Predicted 27 Nov-29 Nov 069/069/069
90 Day Mean 26 Nov 068
V. Geomagnetic A Indices
Observed Afr/Ap 25 Nov 011/010
Estimated Afr/Ap 26 Nov 010/012
Predicted Afr/Ap 27 Nov-29 Nov 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Nov-29 Nov
A. Middle Latitudes
Active 15/05/05
Minor storm 05/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 20/05/05
Minor storm 10/01/01
Major-severe storm 01/01/01
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to remove a product subscription or update the personal information in
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