SWOMCD
SPC MCD 141724
NCZ000-TNZ000-GAZ000-ALZ000-141830-
MESOSCALE DISCUSSION 0490
NWS STORM PREDICTION CENTER NORMAN OK
1224 PM CDT SAT APR 14 2007
AREAS AFFECTED...NRN AL...NWRN GA...SERN TN
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 141724Z - 141830Z
LOW LEVEL WARM ADVECTION APPEARS TO BE THE DOMINANT CONTRIBUTOR IN
NEWD EXPANSION OF ELEVATED CONVECTION NORTH OF RETREATING WARM
FRONT. LATEST SFC DIAGNOSTIC DATA SUGGESTS WARM FRONT IS NOW NEAR
THE NRN EDGE OF WW141 AS SFC DEW POINTS ARE RISING ABOVE 60F THROUGH
CNTRL AL. STRONG VERTICAL SHEAR AND INCREASING INSTABILITY JUST
ABOVE THE BOUNDARY LAYER MAY ULTIMATELY PROVE SUFFICIENT IN
SUSTAINING ORGANIZED SEVERE THUNDERSTORMS ACROSS NRN AL...POSSIBLY
SPREADING INTO SERN TN/NWRN GA. NEAR-SFC BASED SUPERCELLS ALONG
RETREATING WARM FRONT CERTAINLY BEAR WATCHING AS TORNADO POTENTIAL
IS INCREASING ALONG THIS CORRIDOR.
.DARROW.. 04/14/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GSP...MRX...FFC...OHX...BMX...HUN...
33478814 35858527 35558386 34068471 33218601
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