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OK0NAG > SOLAR 06.04.08 23:30l 77 Lines 3132 Bytes #999 (0) @ EU
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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Sun, 6 Apr 2008 22:02:05 -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 06 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 097 Issued at 2200Z on 06 Apr 2008
IA. Analysis of Solar Active Regions and Activity from 05/2100Z
to 06/2100Z: Solar activity was very low. No significant flares
were observed during the past 24 hours. Region 989 (S11W80) remains
spotless. No new regions were numbered.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z:
The geomagnetic field ranged from quiet to minor storm levels due to
the influence of a recurrent coronal hole high speed stream. Solar
wind speeds at the ACE spacecraft ranged from 526 km/sec to a peak
of 763 km/sec at 06/0858Z. Bz reached a minimum of -5.3 nT at
05/2257Z. The greater than 2MeV electron flux reached high levels
today.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be mostly unsettled to active with isolated minor storm
periods at high latitudes on day one (07 April), due to the
continued effects from the high speed stream. Conditions are
expected to become mostly quiet to unsettled, with isolated active
periods, on days two and three (08-09 April).
III. Event Probabilities 07 Apr-09 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 06 Apr 069
Predicted 07 Apr-09 Apr 070/070/070
90 Day Mean 06 Apr 072
V. Geomagnetic A Indices
Observed Afr/Ap 05 Apr 009/021
Estimated Afr/Ap 06 Apr 013/020
Predicted Afr/Ap 07 Apr-09 Apr 010/015-010/012-010/012
VI. Geomagnetic Activity Probabilities 07 Apr-09 Apr
A. Middle Latitudes
Active 30/25/25
Minor storm 10/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 40/35/35
Minor storm 15/10/10
Major-severe storm 05/05/05
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to remove a product subscription or update the personal information in
your account, go to: https://pss.swpc.noaa.gov. For problems, contact:
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