SWOMCD
SPC MCD 261518
NCZ000-SCZ000-261615-
MESOSCALE DISCUSSION 2163
NWS STORM PREDICTION CENTER NORMAN OK
1018 AM CDT TUE AUG 26 2008
AREAS AFFECTED...NRN SC/SRN NC
CONCERNING...TORNADO WATCH 866...
VALID 261518Z - 261615Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 866 CONTINUES.
THUNDERSTORMS DEVELOPING OVER NRN SC/SRN NC...INCLUDING NERN PART OF
WW 866...AND INTERACTING WITH A SURFACE BOUNDARY EXTENDING FROM NWRN
SC EWD TO SERN NC /VICINITY OF ILM/ WILL POSE A THREAT FOR AN
ISOLATED TORNADO. THIS THREAT APPEARS LIMITED...GIVEN NUMBER OF
STORMS ALREADY DEVELOPING IN THIS REGION...WITH A NEW WW NOT
WARRANTED AT THIS TIME TO THE ENE OF WW 866.
SURFACE HEATING ALONG AND S OF THE ABOVEMENTIONED BOUNDARY WITH
TEMPERATURES RISING THROUGH THE UPPER 70S HAS ELIMINATED MUCH OF
INHIBITION FOR THE FAIRLY RAPID DEVELOPMENT OF CONVECTION IN THE
VICINITY OF THE BOUNDARY FROM NRN SC INTO SRN NC. STORM MOVEMENT
THUS FAR HAS BEEN NWD WITH STRONGER ACTIVITY TENDING TO WEAKEN AS IT
MOVES N OF THE SURFACE BOUNDARY. AREA VWPS INDICATED A MODEST
INCREASE IN SLY LOW LEVEL WINDS ATOP ELY SURFACE WINDS. ALTHOUGH
DEEP LAYER SHEAR IS WEAK TO MAINTAIN STORM ORGANIZATION...LOW LEVEL
SHEAR IN THE VICINITY OF THE BOUNDARY SHOULD PROVE SUFFICIENT FOR
LOW LEVEL STORM ROTATION...ESPECIALLY WITH ANY STORM THAT SHOWS
DEVIANT MOTION /I.E. EWD/ ALONG THE BOUNDARY.
..PETERS.. 08/26/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MHX...RAH...ILM...CAE...GSP...
34428064 34398126 35088153 35428087 35237963 34917836
34557792 34277815 34077909
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