DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 171232
SWODY1
SPC AC 171229

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0629 AM CST SAT NOV 17 2012

VALID 171300Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER TROUGH LOCATED OVER THE SERN CONUS AND GULF OF MEXICO THIS
MORNING IS FORECAST TO MOVE ONLY SLIGHTLY EWD DURING THE PERIOD.
THOUGH AN ISOLATED LIGHTNING STRIKE WILL BE POSSIBLE OVER THE FL
PENINSULA THIS AFTERNOON...THUNDERSTORMS WILL BE MOST PROBABLE AHEAD
OF THE TROUGH OVER THE ATLANTIC. FARTHER W...AN UPPER-LEVEL TROUGH
AND ASSOCIATED SURFACE COLD FRONT WILL MOVE ACROSS THE PAC NW BY
TONIGHT. POST FRONTAL SHOWERS AND ISOLATED THUNDERSTORMS WILL BE
POSSIBLE ALONG THE IMMEDIATE ORE/WA COAST AND OFFSHORE WATERS DURING
THE OVERNIGHT HOURS. MEANWHILE...A MINOR UPPER IMPULSE WILL MOVE
FROM CA THIS MORNING TO THE FOUR CORNERS AREA BY EARLY NIGHT.
MOISTENING AND ASCENT ASSOCIATED WITH THIS FEATURE COMBINED WITH
STEEP LAPSE RATES WILL AID IN ISOLATED THUNDERSTORM DEVELOPMENT FROM
NRN UT INTO NWRN NM THIS EVENING.

..GARNER/MEAD.. 11/17/2012

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