SWOD48
SPC AC 230826
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0326 AM CDT MON APR 23 2007
VALID 261200Z - 011200Z
..DISCUSSION...
LATEST MODEL GUIDANCE IS CONSISTENT IN DEPICTING A GRADUAL SHIFT IN
THE LONG WAVE PATTERN TO THAT OF TROUGHING OVER THE ERN U.S. AND
RIDGING OVER THE ROCKIES. HOWEVER EARLY IN THIS TRANSITION...SOME
THREAT OF SEVERE WEATHER WILL EXIST OVER THE ERN GULF COAST STATES
TO THE SERN ATLANTIC STATES ON DAYS 4 AND 5 /THU-FRI/...APRIL 26TH
AND 27TH. THIS WILL BE IN ASSOCIATION WITH WEAKENING SHORTWAVE
TROUGH AND ATTENDANT FRONTAL SYSTEM MOVING EWD THROUGH THE REGION.
THIS THREAT SHOULD REMAIN RELATIVELY LOCALIZED AS INSTABILITY AND
VERTICAL SHEAR ARE FORECAST TO BE MARGINALLY SUPPORTIVE OF ORGANIZED
STORMS.
THEREAFTER...ANY PROSPECTS OF ORGANIZED SEVERE WEATHER APPEAR QUITE
SMALL.
.MEAD.. 04/23/2007
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