MESOSCALE DISCUSSION 0773
   NWS STORM PREDICTION CENTER NORMAN OK
   1037 PM CDT FRI MAY 08 2009
   
   AREAS AFFECTED...WESTERN VA/NORTHWEST NC/NORTHEAST TN/FAR SOUTHERN
   WV
   
   CONCERNING...TORNADO WATCH 273...276...
   
   VALID 090337Z - 090430Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 273...276...CONTINUES.
   
   TORNADO WATCHES 273/276 CONTINUE UNTIL 06Z/07Z RESPECTIVELY.
   
   WITH A LONG-LIVED SUPERCELL CURRENTLY ACROSS GRAYSON COUNTY VA AS OF
   0330Z...PRIMARY SEVERE/ISOLATED TORNADO THREAT ACROSS WATCHES
   273/276 SHOULD CONTINUE ALONG PERIPHERY OF ARCING SURFACE COLD POOL
   ACROSS FAR WESTERN VA INTO NORTHWEST NC...WITH CONTINUED POTENTIAL
   FOR UPSTREAM DEVELOPMENT ACROSS EASTERN KY/FAR SOUTHERN WV AND
   SUBSEQUENT EAST-SOUTHEASTWARD PROPAGATION ALONG THE AFOREMENTIONED
   BOUNDARY. WITH A MOIST/INSTABILITY FEED FROM THE
   SOUTHWEST...SLIGHTLY VEERED BUT RATHER STRONG LOW/MID LEVEL WIND
   FIELDS PER WSR-88D VWP DATA FROM MORRISTOWN/BLACKSBURG WILL CONTINUE
   TO SUPPORT ROTATING STORMS CAPABLE OF SEVERE HAIL/STRONG WINDS AND
   PERHAPS AN ISOLATED TORNADO.
   
   ..GUYER.. 05/09/2009
   
   
   ATTN...WFO...RAH...RNK...RLX...GSP...MRX...JKL...
   
   LAT...LON   37918201 37448010 37037883 36087994 36218186 36778224
               37918201