MESOSCALE DISCUSSION 1064
   NWS STORM PREDICTION CENTER NORMAN OK
   0747 PM CDT THU JUN 11 2009
   
   AREAS AFFECTED...SRN KY...NRN TN...FAR SWRN VA
   
   CONCERNING...TORNADO WATCH 381...
   
   VALID 120047Z - 120145Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 381 CONTINUES.
   
   NEW WW WILL LIKELY BE ISSUED DOWNSTREAM OF WW 381 ACROSS PORTIONS OF
   NRN TN/SERN KY/FAR SWRN VA BY 02Z.
   
   LEADING EDGE OF WEST-EAST ORIENTED QLCS EXTENDED ROUGHLY FROM 15 S
   PAH TO 25 E BWG AS OF 0040Z. SUBSTANTIAL AIR MASS RECOVERY HAD
   OCCURRED ACROSS WRN/MIDDLE TN IN THE WAKE OF CONVECTION EARLIER
   TODAY...WITH 00Z SURFACE OBSERVATIONS STILL DEPICTING DEW POINTS IN
   THE UPPER 60S TO LOWER 70S WITH TEMPERATURES COOLING TO AROUND 80.
   00Z BNA RAOB SAMPLES THIS DOWNSTREAM AIR MASS WELL WITH MLCAPE
   AROUND 2500 J/KG. LOW/MID-LEVEL HODOGRAPH IS QUITE FAVORABLE FOR
   CONTINUED MCS ORGANIZATION ALONG WITH OCCASIONAL SUPERCELL
   STRUCTURES /EFFECTIVE SRH AROUND 180 M2/S2 IN 00Z BNA RAOB/. AS COLD
   POOL LIKELY STRENGTHENS...OVERALL PROPAGATION SHOULD RESULT IN AN
   OVERALL SELY MOTION INTO NRN PORTIONS OF TN AND PERHAPS SWRN VA.
   DAMAGING WINDS SHOULD BECOME THE PRIMARY THREAT WITH TIME...BUT
   ISOLATED TORNADO/SEVERE HAIL WILL REMAIN POSSIBLE WITH EMBEDDED
   SUPERCELLS.
   
   ..GRAMS.. 06/12/2009
   
   
   ATTN...WFO...MRX...JKL...LMK...OHX...PAH...MEG...
   
   LAT...LON   37168280 36728242 36208255 35808373 35718502 35738632
               35858779 36068853 36468909 36878869 37178702 37398448
               37318359 37168280