Thursday, November 24, 2011

DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 241552
SWODY2
SPC AC 241551

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0951 AM CST THU NOV 24 2011

VALID 251200Z - 261200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER TROUGH AXIS EXTENDING FROM THE FOUR CORNERS STATES INTO NRN
MEXICO FRI MORNING WILL DRIFT EWD INTO THE PLAINS THROUGH THE
PERIOD...EVENTUALLY PHASING WITH A STRONGER TROUGH WHICH WILL MOVE
FROM THE NRN ROCKIES INTO THE NRN AND CNTRL PLAINS OVERNIGHT. AHEAD
OF THESE FEATURES AND DURING THE DAY...A WEAK LOW PRESSURE TROUGH IS
FORECAST TO EXTEND FROM MN/IA SWWD INTO W TX AT 00Z....SHIFTING EWD
ACROSS THE UPPER MS VALLEY AND INTO SRN OK/NRN TX BY 12Z SAT AS A
STRONG COLD FRONT DEVELOPS OVER THE NRN AND CNTRL PLAINS.

SLY FLOW AHEAD OF THE SRN STREAM TROUGH AND FORCING WITH THIS
FEATURE WILL EVENTUALLY HELP TO MOISTEN THE COLUMN ACROSS THE SRN
AND CNTRL PLAINS. HOWEVER...RELATIVELY WARM TEMPERATURE PROFILES
ALOFT WILL REMAIN...WHICH WILL RESULT IN LITTLE IF ANY CAPE FOR
THUNDERSTORMS. AS A RESULT...ONLY RAIN SHOWERS ARE ANTICIPATED ALONG
THE COLD FRONT FROM THE UPPER MS VALLEY SWWD INTO TX.

..JEWELL.. 11/24/2011

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