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Date: Sun, 20 Jul 2008 22:01:55 -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 20 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 202 Issued at 2200Z on 20 Jul 2008
IA. Analysis of Solar Active Regions and Activity from 19/2100Z
to 20/2100Z: Solar activity was at very low levels. Region 1000
(S12W05) remained quiet and stable.
IB. Solar Activity Forecast: Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z:
The geomagnetic field was quiet. 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 to unsettled all three days of the
forecast period (21 - 23 July) with isolated active periods possible
on day three. The forecasted increase in activity is a result of a
recurrent coronal hole high speed stream that is expected to rotate
into a geoeffective position.
III. Event Probabilities 21 Jul-23 Jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 20 Jul 066
Predicted 21 Jul-23 Jul 066/066/066
90 Day Mean 20 Jul 067
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jul 001/003
Estimated Afr/Ap 20 Jul 003/005
Predicted Afr/Ap 21 Jul-23 Jul 008/008-010/010-015/015
VI. Geomagnetic Activity Probabilities 21 Jul-23 Jul
A. Middle Latitudes
Active 15/15/45
Minor storm 05/05/20
Major-severe storm 01/01/05
B. High Latitudes
Active 20/20/50
Minor storm 05/10/20
Major-severe storm 01/01/05
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:
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