SWODY1
SPC AC 260039
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0739 PM CDT THU OCT 25 2007
VALID 260100Z - 261200Z
..NO SVR TSTM AREAS FORECAST...
..ERN NC THROUGH THE MID ATLANTIC REGION...
DEEP SLY FLOW ALONG ERN PERIPHERY OF UPPER LOW CENTERED OVER MS WILL
MAINTAIN PLUME OF DEEP MOISTURE FROM THE CNTRL AND ERN CAROLINAS NWD
INTO THE MID ATLANTIC AND PARTS OF THE UPPER OH VALLEY TONIGHT. A
SMALL WARM SECTOR WITH RICH LOW LEVEL MOISTURE REMAINS INLAND ACROSS
ERN NC S OF SW-NE QUASISTATIONARY FRONT. HOWEVER...THE THERMODYNAMIC
ENVIRONMENT REMAINS MARGINAL WITH WEAK LAPSE RATES AND INSTABILITY.
A COUPLE OF STORMS THAT DEVELOPED IN THE AFTERNOON AND EARLY EVENING
ACROSS ERN NC MANAGED TO DEVELOP UPDRAFT ROTATION WHERE VORTICITY
WAS LOCALLY ENHANCED ALONG THE STATIONARY BOUNDARY. A MARGINAL
THREAT OF A BRIEF TORNADO MAY PERSIST NEAR THIS BOUNDARY OVER ERN NC
THIS EVENING. HOWEVER...ONSET OF NOCTURNAL COOLING SUGGESTS OVERALL
TRENDS SHOULD BE DOWN. THUNDERSTORMS WILL REMAIN MOST PREVALENT FROM
PARTS OF ERN NC EWD INTO THE GULF STREAM AREAS OVERNIGHT. FARTHER N
IN COOL SECTOR...ADVECTION OF LOW LEVEL MOISTURE ABOVE THE STABLE
LAYER WILL RESULT IN MARGINAL ELEVATED INSTABILITY WITH POTENTIAL
FOR MORE ISOLATED LIGHTNING ACTIVITY OVERNIGHT.
.DIAL.. 10/26/2007
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