MESOSCALE DISCUSSION 1445
   NWS STORM PREDICTION CENTER NORMAN OK
   0721 PM CDT TUE JUL 10 2007
   
   AREAS AFFECTED...NERN MS...SRN TN...NRN AL
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 110021Z - 110115Z
   
   SQUALL LINE HAS DEVELOPED ALONG LEADING EDGE OF OLD MCS THAT MOVED
   ACROSS OK/AR EARLIER TODAY.  THIS ACTIVITY HAS EVOLVED WITHIN A
   NARROW AXIS OF INSTABILITY THAT HAS YET TO BE OVERTURNED ALONG THE
   MS/AL BORDER INTO EXTREME SRN TN.  LATEST RADAR TRENDS SUGGEST
   BOWING STRUCTURE IS MOVING ENEWD AT ROUGHLY 35 KT WHILE TRAILING
   CONVECTION IS ADVANCING EWD SOMEWHAT SLOWER ACROSS NRN MS.  IT
   APPEARS THERE IS SOME THREAT FOR ISOLATED DAMAGING WINDS ALONG
   LEADING EDGE OF BOW AS IT MOVES INTO NWRN AL/SRN TN.  LOSS OF
   DAYTIME HEATING AND MARGINAL INSTABILITY DOWNSTREAM INTO NERN
   AL/MIDDLE TN SUGGEST THIS THREAT WILL REMAIN LOCAL AND ONLY FOR THE
   NEXT FEW HOURS.
   
   ..DARROW.. 07/11/2007
   
   
   ATTN...WFO...OHX...BMX...HUN...MEG...
   
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