SWOMCD
SPC MCD 091741
NCZ000-VAZ000-091845-
MESOSCALE DISCUSSION 2239
NWS STORM PREDICTION CENTER NORMAN OK
1241 PM CDT TUE SEP 09 2008
AREAS AFFECTED...PORTIONS OF VA/NC
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 091741Z - 091845Z
TSTMS SHOULD INCREASE IN COVERAGE/INTENSITY THROUGH MID AFTERNOON
ACROSS SOUTHERN VA AND NC...A WATCH WILL LIKELY BE ISSUED WITHIN THE
HOUR.
AHEAD OF A COLD FRONT...TSTMS WILL CONTINUE TO INCREASE/SPREAD
EASTWARD OVER THE MOUNTAINS OF WESTERN PORTIONS OF VA/NC...WITH
ADDITIONAL DEVELOPMENT OCCURRING FARTHER EAST ACROSS SOUTHERN VA/NC
OWING TO DIFFERENTIAL HEATING AND A VERY MOIST BOUNDARY LAYER /70S F
SURFACE DEWPOINTS/. PER WATER VAPOR IMAGERY...A MID LEVEL IMPULSE
CROSSING THE CENTRAL APPALACHIANS THIS AFTERNOON WILL FURTHER
CONTRIBUTE TO FORCING FOR ASCENT/TSTM COVERAGE...WITH SOMEWHAT
INCREASING FLOW ALOFT CONTRIBUTING TO TSTM ORGANIZATION. PRIMARY
RISK WILL LIKELY BE DAMAGING WINDS/SEVERE HAIL...ALTHOUGH A TORNADO
RISK CANNOT BE RULED WITH THE MORE QUASI-DISCRETE DEVELOPMENT AS
WIND PROFILES ESPECIALLY ACROSS VA/NORTHERN NC MAY SUPPORT SOME
SUPERCELLS.
..GUYER.. 09/09/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...AKQ...MHX...LWX...RAH...RNK...GSP...
37957627 36357652 35277806 35017986 35608217 36898122
37877752
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