SWODY1
SPC AC 250046
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0646 PM CST WED DEC 24 2008
VALID 250100Z - 251200Z
...NO SVR TSTM AREAS FORECAST...
...AL/NW GA...
A LINE OF CONVECTION ONGOING ALONG A COLD FRONT FROM NW GA SWWD INTO
ERN MS WILL CONTINUE FOR A FEW MORE HOURS. SEVERAL SHORT
LINE-SEGMENTS ARE ALSO ONGOING ACROSS THE WARM SECTOR WHERE
INSTABILITY IS VERY WEAK. REGIONAL WSR-88D VWPS NEAR THE CONVECTIVE
LINE SHOW 0-6 KM SHEAR VALUES IN THE 50 TO 60 KT RANGE ACROSS CNTRL
AND NRN AL. THIS ALONG WITH ABOUT 50 KT OF LOW-LEVEL FLOW MAY
SUSTAIN A MARGINAL WIND DAMAGE THREAT WITH THE LINE FOR ANOTHER HOUR
OR TWO. FURTHER SOUTH ACROSS SRN AL...VWPS SHOW SLIGHTLY WEAKER
LOW-LEVEL FLOW AND VERTICAL SHEAR BUT RUC ANALYSIS SUGGESTS
INSTABILITY IS SLIGHTLY STRONGER WITH SBCAPE VALUES AROUND 500 J/KG.
THIS COULD ALSO SUPPORT A MARGINAL WIND DAMAGE THREAT WITH THE
STRONGER CELL ELEMENTS EMBEDDED THE LINE.
..BROYLES.. 12/25/2008
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