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OK0NAG > SOLAR 28.04.08 00:09l 77 Lines 3150 Bytes #999 (0) @ EU
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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Sun, 27 Apr 2008 22:01:42 -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 27 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 118 Issued at 2200Z on 27 Apr 2008
IA. Analysis of Solar Active Regions and Activity from 26/2100Z
to 27/2100Z: Solar activity was very low. No flares were observed
during the past 24 hours and the solar disk is void of spots.
Yesterday's CME (associated with the B3 x-ray flare at 26/1408)
could be seen to be transiting the STEREO-A and B Heliospheric
Imager I (HI1) fields of view.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field was predominantly quiet to unsettled. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the past 24 hours.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be mostly quiet for the first day (28 April) and most of
the second day (29 April). An increase is possible late on the
second day or early on the third day (30 April) due to an
anticipated glancing blow from the CME that was observed on 26
April. Activity is expected to increase to predominantly unsettled
levels at that time with a chance for isolated active periods.
III. Event Probabilities 28 Apr-30 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 27 Apr 068
Predicted 28 Apr-30 Apr 068/068/068
90 Day Mean 27 Apr 072
V. Geomagnetic A Indices
Observed Afr/Ap 26 Apr 005/010
Estimated Afr/Ap 27 Apr 007/008
Predicted Afr/Ap 28 Apr-30 Apr 005/005-007/008-010/012
VI. Geomagnetic Activity Probabilities 28 Apr-30 Apr
A. Middle Latitudes
Active 10/20/25
Minor storm 05/10/15
Major-severe storm 01/01/05
B. High Latitudes
Active 10/25/30
Minor storm 05/10/20
Major-severe storm 01/05/05
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your account, go to: https://pss.swpc.noaa.gov. For problems, contact:
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