Wednesday, August 20, 2008

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 200832
SWOD48
SPC AC 200831

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0331 AM CDT WED AUG 20 2008

VALID 231200Z - 281200Z

...DISCUSSION...

MEDIUM RANGE MODELS BEGIN TO DIVERGE ON SPEED/MOVEMENT OF UPPER
TROUGH AS IT PROGRESSES ACROSS ONTARIO/GREAT LAKES REGION INTO SERN
CANADA/NEW ENGLAND. WHILE A BAND OF CONVECTION WILL LIKELY
ACCOMPANY THE ADVANCING FRONTAL ZONE...SHEAR/INSTABILITY SHOULD
PROVE TOO MARGINAL TO WARRANT AN ORGANIZED RISK OF SEVERE AT THIS
TIME.

FARTHER SOUTH...REMNANTS OF FAY ARE EXPECTED TO LINGER OVER THE SERN
U.S. INTO THE LATTER PART OF THE WEEK. WHILE CONVECTION WILL BE
ASSOCIATED WITH THIS TROPICAL SYSTEM...THE PREDICTABILITY OF SEVERE
THIS FAR IN ADVANCE IS TOO LOW TO ISSUE AN OUTLOOK.

..DARROW.. 08/20/2008

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