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Date: Thu, 17 Jul 2008 22:01:53 -0000
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Subject: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2008 Jul 17 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 199 Issued at 2200Z on 17 Jul 2008
IA. Analysis of Solar Active Regions and Activity from 16/2100Z
to 17/2100Z: Solar activity was very low. The visible disk remained
spotless.
IB. Solar Activity Forecast: Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z:
The geomagnetic field was at quiet to unsettled levels. Solar wind
speed, as measured at the ACE spacecraft, indicated a gradual
decrease in velocities from about 530 km/s at the beginning of the
period, to near 460 km/s by forecast issue time. The greater than 2
MeV electron flux at geosynchronous orbit reached high levels again
today.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be mostly quiet for the next three days (18 - 20 July).
III. Event Probabilities 18 Jul-20 Jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 17 Jul 065
Predicted 18 Jul-20 Jul 066/066/066
90 Day Mean 17 Jul 067
V. Geomagnetic A Indices
Observed Afr/Ap 16 Jul 004/007
Estimated Afr/Ap 17 Jul 005/005
Predicted Afr/Ap 18 Jul-20 Jul 005/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 18 Jul-20 Jul
A. Middle Latitudes
Active 10/10/10
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 30/10/10
Minor storm 10/05/05
Major-severe storm 05/01/01
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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