Sunday, September 9, 2007

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 090858
SWOD48
SPC AC 090857

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0357 AM CDT SUN SEP 09 2007

VALID 121200Z - 171200Z

..DISCUSSION...
THOUGH IT APPEARS THAT SEVERE THREAT SHOULD REMAIN LIMITED THROUGH
MOST OF THE PERIOD...MODELS CONTINUE TO HINT AT A RELATIVELY GREATER
SEVERE POTENTIAL DAY 5 OVER THE SRN HIGH PLAINS REGION. BOTH MODELS
DEPICT A LARGE-SCALE TROUGH EXPANDING SWD ACROSS THE CENTRAL U.S.
AROUND DAY 5...WITH ASSOCIATED COLD FRONT ALSO MOVING SWD ACROSS THE
PLAINS.

GIVEN A MOIST WARM SECTOR ANTICIPATED AHEAD OF THE FRONT...DEGREE OF
INSTABILITY COULD SUPPORT SCATTERED STORM DEVELOPMENT. WITH
ENHANCED WLY FLOW ALOFT LIKELY TO ACCOMPANY THE EXPANDING
TROUGH...AND SELY LOW-LEVEL WINDS EXPECTED S OF THE FRONT...SHEAR
SHOULD SUPPORT ORGANIZED/POSSIBLY SEVERE STORMS.

ELSEWHERE...POTENTIAL FOR AN ORGANIZED SEVERE WEATHER EVENT APPEARS
TOO LOW ATTM TO WARRANT ANY ADDITIONAL OUTLOOK AREAS.

.GOSS.. 09/09/2007

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