Tuesday, November 27, 2012

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 270547
SWODY1
SPC AC 270545

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1145 PM CST MON NOV 26 2012

VALID 271200Z - 281200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS/FORECAST...
A SFC COLD FRONT AT THE LEADING EDGE OF A COLD/CONTINENTAL AIR MASS
WILL EXTEND FROM THE MID-ATLANTIC STATES SWWD TO DEEP SOUTH TX EARLY
THIS MORNING...AND ADVANCE EWD/SEWD THROUGH THE PERIOD. THE FRONT
WILL HAVE CLEARED MOST OF THE SERN U.S. COAST BY LATE TONIGHT.
SHOWERS AND ISOLATED THUNDERSTORMS WILL LIKELY BE ONGOING FROM PARTS
OF AL/GA SWWD TO THE NWRN GULF OF MEXICO AND PERHAPS DEEP SOUTH TX
THIS MORNING...WITH THE BACK EDGE OF THIS ACTIVITY SHIFTING EWD/SEWD
IN CONCERT WITH THE MOTION OF THE FRONT. STORMS SHOULD WEAKEN
THROUGH THE DAY AS ASCENT ACCOMPANYING A SRN STREAM SHORTWAVE
IMPULSE OUTPACES MARGINAL WARM-SECTOR BUOYANCY. WITH ONLY MODEST
AMOUNTS OF DEEP SHEAR AND WEAK LAPSE RATES...SVR STORMS ARE
UNLIKELY. ELSEWHERE...STABLE THERMODYNAMIC PROFILES SHOULD PRECLUDE
THUNDERSTORM DEVELOPMENT.

..COHEN/GOSS.. 11/27/2012

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