SWODY1
SPC AC 180511
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1211 AM CDT SAT OCT 18 2008
VALID 181200Z - 191200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
THE VAST MAJORITY OF THE U.S. WILL REMAIN CONVECTIVE-FREE SATURDAY
AS MOISTURE/INSTABILITY ARE FORCED WELL OFF THE GULF/ATLANTIC COAST.
EVEN SO...TWO POSSIBLE AREAS OF DEEP CONVECTION WILL BE NOTED NEAR
THE OUTER BANKS OF NC AND ACROSS INTERIOR ORE INTO PORTIONS OF ID.
ALTHOUGH SFC COLD FRONT WILL HAVE PROGRESSED EAST OF THE CAROLINAS
AT THE BEGINNING OF THE PERIOD IT APPEARS WEAK WARM ADVECTION ATOP
COOLER AIRMASS MAY RESULT IN ISOLATED THUNDERSTORMS NEAR THE
COAST...BUT PRIMARILY OVER THE WARMER WATERS OFFSHORE.
MID LEVEL ASCENT/MOISTENING AHEAD OF SHORTWAVE TROUGH WILL SPREAD
ACROSS ORE INTO ID DURING THE DAY1 PERIOD. FORECAST SOUNDINGS
ACROSS THIS REGION SUGGEST JUST ENOUGH INSTABILITY...GIVEN THE LARGE
SCALE SUPPORT...FOR CONVECTION AND POSSIBLY AN ISOLATED LIGHTNING
STRIKE. IN BOTH CASES THUNDERSTORMS WILL REMAIN VERY SPARSE.
..DARROW/HURLBUT.. 10/18/2008
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