MESOSCALE DISCUSSION 0758
   NWS STORM PREDICTION CENTER NORMAN OK
   0837 AM CDT FRI MAY 08 2009
   
   AREAS AFFECTED...SERN MO...CNTRL AND NERN AR..WRN TN...NRN MS...NRN
   AL AND SWRN KY
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 081337Z - 081430Z
   
   DAMAGING BOW ECHO EXPECTED TO CONTINUE ESEWD INTO THE TN VALLEY
   REGION. WW WILL BE ISSUED SOON DOWNSTREAM FROM WW 266.
   
   WELL ORGANIZED DAMAGING COMMA HEAD/BOW ECHO SYSTEM WITH A HISTORY OF
   PRODUCING GUSTS UP TO 80 KT EXTENDS FROM SWRN MO...NWRN AR INTO NERN
   OK AND IS MOVING ESEWD AT AROUND 60 KT. AS BOUNDARY LAYER CONTINUES
   TO DESTABILIZE...THIS ACTIVITY IS EXPECTED TO DEVELOP ESEWD THROUGH
   AXIS OF MODERATE INSTABILITY ALONG NERN EDGE OF STRONGER CAP.
   DAMAGING WIND AND LARGE HAIL ARE EXPECTED TO REMAIN THE PRIMARY
   THREATS. HOWEVER...ISOLATED TORNADOES CANNOT BE RULED
   OUT...ESPECIALLY ALONG NRN AND SRN ENDS OF THE LINE.
   
   ..DIAL.. 05/08/2009
   
   
   ATTN...WFO...MRX...FFC...LMK...OHX...HUN...PAH...MEG...LSX...
   LZK...
   
   LAT...LON   36838732 35998554 35248520 34488602 34499069 35069283
               36089123 37749054 36838732