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OK0NAG > SOLAR 08.04.08 23:30l 77 Lines 3125 Bytes #999 (0) @ EU
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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Tue, 8 Apr 2008 22:02:06 -0000
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Subject: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2008 Apr 08 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 099 Issued at 2200Z on 08 Apr 2008
IA. Analysis of Solar Active Regions and Activity from 07/2100Z
to 08/2100Z: Solar activity was very low. A non Earth-directed CME
was first observed off the west limb on SOHO/LASCO C2 imagery at
08/1750Z. No new regions were numbered.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 07/2100Z to 08/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind velocities
remained elevated due to the continuing high speed stream.
Velocities from the ACE satellite ranged from 604 km/sec to 778
km/sec during the past 24 hours. IMF Bz continued to fluctuate
between -4.9 nT to 5.7 nT. The 2 MeV electron flux at geosynchronous
orbit reached high levels today.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
for the next two days (09-10 April). Isolated minor storm levels are
possible at high latitudes during this period due to the high speed
stream. Activity is expected to be quiet to unsettled on day three
(11 April).
III. Event Probabilities 09 Apr-11 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 08 Apr 070
Predicted 09 Apr-11 Apr 070/070/070
90 Day Mean 08 Apr 072
V. Geomagnetic A Indices
Observed Afr/Ap 07 Apr 009/012
Estimated Afr/Ap 08 Apr 007/010
Predicted Afr/Ap 09 Apr-11 Apr 008/010-008/010-005/005
VI. Geomagnetic Activity Probabilities 09 Apr-11 Apr
A. Middle Latitudes
Active 20/20/15
Minor storm 05/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 30/30/25
Minor storm 10/10/10
Major-severe storm 05/05/01
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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