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OK0NAG > SOLAR 20.02.08 00:31l 73 Lines 2868 Bytes #999 (0) @ EU
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Subj: Report of Solar Geophysical Activity (RSGA)
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Date: Tue, 19 Feb 2008 22:01:46 -0000
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Subject: Report of Solar Geophysical Activity (RSGA)
X-asg-orig-subj: Report of Solar Geophysical Activity (RSGA)
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:Product: Report of Solar-Geophysical Activity
:Issued: 2008 Feb 19 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 050 Issued at 2200Z on 19 Feb 2008
IA. Analysis of Solar Active Regions and Activity from 18/2100Z
to 19/2100Z: Solar activity was at very low levels. The visible
solar disk was spotless.
IB. Solar Activity Forecast: Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z:
The geomagnetic field was at quiet to active levels. Solar wind
speed at the ACE spacecraft reached a maximum of 655 km/s at
approximately 19/0159Z, and Bz ranged between +/- 5nT. Wind speed
ended the summary period at around 600 km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at mostly unsettled levels, with isolated active
periods possible on days one and two (20 - 21 February). On day
three (22 February) activity levels should decrease to predominately
quiet levels.
III. Event Probabilities 20 Feb-22 Feb
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 19 Feb 072
Predicted 20 Feb-22 Feb 072/072/072
90 Day Mean 19 Feb 075
V. Geomagnetic A Indices
Observed Afr/Ap 18 Feb 009/012
Estimated Afr/Ap 19 Feb 008/012
Predicted Afr/Ap 20 Feb-22 Feb 008/008-008/012-005/005
VI. Geomagnetic Activity Probabilities 20 Feb-22 Feb
A. Middle Latitudes
Active 10/10/05
Minor storm 05/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/20/10
Minor storm 10/10/05
Major-severe storm 05/05/01
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