SWODY1
SPC AC 270031
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0631 PM CST MON NOV 26 2007
VALID 270100Z - 271200Z
..NO SVR TSTM AREAS FORECAST...
..COASTAL CAROLINAS TO SERN VA...
DE-AMPLIFYING MID/UPPER LEVEL TROUGH...CURRENTLY LOCATED OVER THE OH
VALLEY...WILL CONTINUE TO WEAKEN AS IT ACCELERATES NEWD TONIGHT
REACHING NEW ENGLAND BY 12Z TUESDAY IN RESPONSE TO LARGE UPSTREAM
TROUGH MOVING ESEWD TOWARD THE GREAT LAKES AND OH/TN VALLEYS.
ATTENDANT SURFACE LOW LOCATED IN THE UPPER OH VALLEY WITH TRAILING
COLD FRONT EXTENDING SSWWD THROUGH SRN APPALACHIANS TO NERN GULF
WILL REMAIN PROGRESSIVE WITH LOW REACHING MAINE EARLY TUESDAY
MORNING. THE COLD FRONT SHOULD EXTEND SWWD THROUGH SRN NEW ENGLAND
TO COASTAL AREAS OF THE MID ATLANTIC STATES AND INTO NRN FL.
AIR MASS ACROSS THE ERN CAROLINAS INTO SERN VA REMAINS MOIST
/SURFACE DEWPOINTS IN THE MID 60S/...BUT WEAK LAPSE RATES AND LOSS
OF DAYTIME HEATING WILL MAINTAIN WEAK INSTABILITY WITH GREATEST
VALUES NEAR THE COAST. ALTHOUGH STRONGER FORCING FOR ASCENT IS
FORECAST TO BE N OF THIS REGION TONIGHT...SOME LIFT ALONG SRN EXTENT
OF UPPER OH VALLEY TROUGH SHOULD SUPPORT A FEW ADDITIONAL TSTMS
WITHIN PRE-FRONTAL AIR MASS FROM ERN SC TO SERN VA. WEAK
INSTABILITY/LAPSE RATES WILL LIMIT THE SEVERE WEATHER POTENTIAL.
HOWEVER...FURTHER STRENGTHENING OF WIND FIELDS/SHEAR AND FAST STORM
MOTIONS MAY SUPPORT A FEW STRONG WIND GUSTS AS THE PRIMARY THREAT.
.PETERS.. 11/27/2007
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