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OK0NAG > SOLAR 23.04.10 23:06l 219 Lines 6823 Bytes #999 (0) @ EU
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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: 23 Apr 2010 22:04:00 +0000
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Subject: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Apr 23 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 113 Issued at 2200Z on 23 Apr 2010
IA. Analysis of Solar Active Regions and Activity from 22/2100Z
to 23/2100Z: Solar activity was very low. No flares were observed
and the visible disk remained spotless. A CME was visible in both
Stereo A and B coronagraphs leaving the sun around 22/00Z with
trajectories suggesting a potentially geoeffective event. SOHO
LASCO data gaps in C2 and C3 imagery prohibit confirmation of a halo at
this time.
IB. Solar Activity Forecast: Solar activity is expected to remain
very low for the next 3 days (24-26 April).
IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z:
The geomagnetic field was mostly quiet to unsettled, with the
exception of a brief period of minor storming and active conditions
between 00-06Z. This activity was due to elevated solar wind speeds
from a coronal hole and a brief switch to negative polarity.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next 3 days (24-26 April).
III. Event Probabilities 24 Apr-26 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 23 Apr 075
Predicted 24 Apr-26 Apr 075/075/080
90 Day Mean 23 Apr 081
V. Geomagnetic A Indices
Observed Afr/Ap 22 Apr 004/006
Estimated Afr/Ap 23 Apr 012/014
Predicted Afr/Ap 24 Apr-26 Apr 005/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 Apr-26 Apr
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
your account, go to: https://pss.swpc.noaa.gov. Please do not use the from
address for correspondence, as it is not monitored. For comments or help,
please contact us: pss.help@noaa.gov.
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