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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Wed, 12 Dec 2007 22:02:15 -0000
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Subject: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2007 Dec 12 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 346 Issued at 2200Z on 12 Dec 2007
IA. Analysis of Solar Active Regions and Activity from 11/2100Z
to 12/2100Z: Solar activity has been very low. Region 978 (S06W12)
has produced several low level B-class flares. The region is mostly
unchanged and remains a magnetic beta-gamma configuration. A
northern plage region with reverse polarity characteristics,
according to GONG magnetograms, is the only other solar feature of
note.
IB. Solar Activity Forecast: Solar activity is expected to be very
low to low. Region 978 remains capable of producing an isolated
C-class event.
IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z:
The geomagnetic field was quiet to unsettled with an isolated active
period from 12/0900-1200Z at mid-latitudes. ACE solar wind
measurements indicate the continued influence of the recurrent
coronal hole high-speed stream.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be predominately quiet for 13-15 December.
III. Event Probabilities 13 Dec-15 Dec
Class M 10/10/10
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 12 Dec 094
Predicted 13 Dec-15 Dec 095/095/095
90 Day Mean 12 Dec 070
V. Geomagnetic A Indices
Observed Afr/Ap 11 Dec 009/012
Estimated Afr/Ap 12 Dec 010/010
Predicted Afr/Ap 13 Dec-15 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 13 Dec-15 Dec
A. Middle Latitudes
Active 10/10/10
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor storm 10/10/10
Major-severe storm 01/01/01
Thank you for using the Product Subscription Service. If you would like
to remove a product subscription or update the personal information in
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