Sunday, November 25, 2012

DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 250829
SWODY3
SPC AC 250828

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 AM CST SUN NOV 25 2012

VALID 271200Z - 281200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A RELATIVELY AMPLIFIED/PROGRESSIVE LONGWAVE PATTERN IS EXPECTED TO
PREVAIL ON TUESDAY...HIGHLIGHTED BY AN UPPER RIDGE CENTERED OVER THE
GREAT BASIN/ROCKIES AND AN EASTWARD-SHIFTING UPPER TROUGH OVER THE
EASTERN CONUS. ISOLATED/WIDELY SCATTERED TSTMS WILL BE POSSIBLE
/MAINLY PRIOR TO EVENING/ ACROSS THE GULF COAST REGION/SOUTHEAST
STATES IN ASSOCIATION WITH AN SOUTHEASTWARD ADVANCING COLD FRONT.
HOWEVER...ORGANIZED SEVERE TSTMS ARE NOT CURRENTLY EXPECTED OWING TO
WEAK LAPSE RATES/CONSIDERABLY LIMITED INSTABILITY AHEAD OF THE
FRONT. ADDITIONALLY...A FEW TSTMS MAY BE POSSIBLE IN ASSOCIATION
WITH A FRONTAL BAND NEARING THE CA COAST LATE IN THE
PERIOD...ALTHOUGH THIS TSTM POTENTIAL CURRENTLY APPEARS VERY
MARGINAL/UNCERTAIN.

..GUYER.. 11/25/2012

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