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Date: Wed, 30 Apr 2008 22:01:37 -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 30 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 121 Issued at 2200Z on 30 Apr 2008
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity was very low. No flares were observed
during the past 24 hours.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was 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 quiet to unsettled with isolated active periods for
the next three days (01-03 May). Elevated activity expected on day
one is in response to the CME observed on 26 April. Activity on days
two and three is in response to a recurrent coronal hole high speed
stream that is expected to rotate into a geoeffective position.
III. Event Probabilities 01 May-03 May
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 30 Apr 067
Predicted 01 May-03 May 070/070/070
90 Day Mean 30 Apr 071
V. Geomagnetic A Indices
Observed Afr/Ap 29 Apr 004/008
Estimated Afr/Ap 30 Apr 010/010
Predicted Afr/Ap 01 May-03 May 010/015-010/010-010/010
VI. Geomagnetic Activity Probabilities 01 May-03 May
A. Middle Latitudes
Active 30/30/30
Minor storm 10/10/10
Major-severe storm 05/05/05
B. High Latitudes
Active 50/40/40
Minor storm 15/10/10
Major-severe storm 05/05/05
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:
mailto:pss.help@noaa.gov.
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