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OK0NAG > SOLAR 25.04.08 00:17l 71 Lines 2789 Bytes #999 (0) @ EU
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Date: Thu, 24 Apr 2008 22:01:40 -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 Apr 24 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 115 Issued at 2200Z on 24 Apr 2008
IA. Analysis of Solar Active Regions and Activity from 23/2100Z
to 24/2100Z: Solar activity was very low.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was at unsettled to active conditions due to
the continued influence of the recurrent coronal hole high speed
stream. Solar wind speeds, as measured from the ACE spacecraft,
remain around 600 km/s. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be unsettled with isolated active periods for 25 April.
Predominantly quiet conditions are expected for 26-27 April.
III. Event Probabilities 25 Apr-27 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 24 Apr 070
Predicted 25 Apr-27 Apr 070/070/070
90 Day Mean 24 Apr 072
V. Geomagnetic A Indices
Observed Afr/Ap 23 Apr 017/032
Estimated Afr/Ap 24 Apr 015/022
Predicted Afr/Ap 25 Apr-27 Apr 010/012-005/008-005/005
VI. Geomagnetic Activity Probabilities 25 Apr-27 Apr
A. Middle Latitudes
Active 25/10/10
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 30/10/10
Minor storm 10/05/05
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
your account, go to: https://pss.swpc.noaa.gov. For problems, contact:
mailto:pss.help@noaa.gov.
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