DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 220543
SWODY2
SPC AC 220542

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1142 PM CST FRI FEB 21 2014

VALID 231200Z - 241200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
FAST NWLY FLOW ALOFT WILL REMAIN ACROSS MUCH OF THE CONUS WITH A
LARGE UPPER-LOW CENTERED OVER NRN QUEBEC. AT THE SURFACE...HIGH
PRESSURE WILL BE REINFORCED OVER THE CNTRL AND ERN STATES WITH A
COLD FRONT SINKING SWD AFFECTING THE SRN PLAINS...LOWER MS VALLEY
AND SRN APPALACHIANS BY 00Z. S OF THIS FRONT...A RELATIVELY WEAK
ATTEMPT AT MOISTURE RETURN WILL RESULT IN LOWER 60S F SURFACE
DEWPOINTS ACROSS THE GULF COAST AREA WITH A NON-ZERO THREAT OF
THUNDERSTORMS.

...SRN LA/MS/AL/GA AND FL...
WSWLY FLOW AT 850 MB WILL RESULT IN WEAK ISENTROPIC LIFT AND
ADVECTION OF WEAK INSTABILITY ACROSS THE GULF COAST STATES THROUGH
THE PERIOD. SCATTERED RAIN AND STORMS ARE EXPECTED TO TRAIN ALONG A
GENERALLY W-E ZONE MAINLY OVER SRN AL...GA...AND NRN FL. DESPITE
STRONG MID TO UPPER-LEVEL WIND SHEAR...SPEEDS IN THE LOWEST FEW KM
WILL NOT BE VERY STRONG...AND INSTABILITY WILL BE WEAK...SUGGESTING
ANY WIND GUSTS WILL BE SUB-SEVERE.

TO THE E...STRONG HEATING WILL LEAD TO A DIURNAL CU FIELD OVER MUCH
OF FL...BUT TEMPERATURES ALOFT WILL BE WARM. STILL...WEAK SWLY
LOW-LEVEL FLOW WILL ENHANCE CONVERGENCE ACROSS THE CNTRL AND ERN
PENINSULA RESULTING IN ISOLATED NON-SEVERE THUNDERSTORMS DURING THE
DAY.

..JEWELL.. 02/22/2014

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