Severe Storm Outlook Narrative (AC)
Issued by NWS

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ACUS02 KWNS 201712
SWODY2
SPC AC 201711

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1111 AM CST SAT DEC 20 2014

VALID 211200Z - 221200Z

...NO SVR TSTM AREAS FORECAST...

...SUMMARY...
NUMEROUS SHOWERS AND POSSIBLY A FEW THUNDERSTORMS WILL OCCUR OVER
THE NORTHERN HALF OF FLORIDA INTO SOUTHERN GEORGIA SUNDAY INTO
SUNDAY NIGHT.

...SYNOPSIS...
A POWERFUL UPPER JET EXTENDING FROM THE PAC NW INTO THE CNTRL
ROCKIES WILL CONTRIBUTE TO SUBSTANTIAL AMPLIFICATION OF A CNTRL
CONUS TROUGH. A PRECEDING SRN STREAM SHORTWAVE WILL MOVE ACROSS THE
SOUTHEAST...REINFORCING A WARM FRONT POSITIONED FROM THE NRN GULF OF
MEXICO TO THE CAROLINA COAST.

...NRN FL AND SRN GA...
A WEAK UPPER WAVE WILL PASS N OF A SLOW-MOVING WARM FRONT DRAPED
FROM THE BIG BEND OF FL TO THE LOWER SAVANNAH RIVER VALLEY. A MODEST
INCREASE IN LOW-LEVEL WAA WILL OCCUR IN RESPONSE...SUPPORTING
SCATTERED TO WIDESPREAD SHOWER DEVELOPMENT LATE SUN INTO EARLY MON
MORNING. NEARLY MOIST-ADIABATIC LAPSE RATES ATOP A SHALLOW MODIFIED
BOUNDARY LAYER WILL LIMIT MUCAPE VALUES TO BELOW 300 J/KG...WITH ANY
LIGHTNING POTENTIAL LIKELY CONFINED ALONG/NEAR THE FRONT.

..ROGERS.. 12/20/2014




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