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Mesoscale Discussion 907
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   MESOSCALE DISCUSSION 0907
   NWS STORM PREDICTION CENTER NORMAN OK
   0550 PM CDT TUE MAY 13 2008
   
   AREAS AFFECTED...PARTS OF CNTRL TX INTO ERN OK
   
   CONCERNING...TORNADO WATCH 311...
   
   VALID 132250Z - 140045Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 311 CONTINUES.
   
   SOME CONCERN EXISTS THAT THE MOST EXTENSIVE CONVECTIVE DEVELOPMENT
   THIS EVENING...ASSOCIATED WITH BETTER MID/UPPER FORCING...MAY OCCUR
   BOTH TO THE NORTHEAST OF WW AREA...ACROSS PARTS OF THE OZARKS...AND
   TO THE SOUTH OF WW AREA...ACROSS THE TEXAS EDWARDS PLATEAU AND HILL
   COUNTRY.  HOWEVER...SCATTERED INTENSE CONVECTIVE DEVELOPMENT IS
   UNDERWAY ALONG A COLD ADVANCING ACROSS THE INTERSTATE 35 CORRIDOR OF
   OKLAHOMA...AND NEAR THE DRY LINE TO THE SOUTH OF COLD FRONT ACROSS
   NORTHWEST TEXAS.  AND...THIS ACTIVITY WILL LIKELY PERSIST/INTENSIFY 
   THROUGH 00-01Z...WITHIN AN ENVIRONMENT CHARACTERIZED BY MIXED LAYER
   CAPE IN EXCESS OF 2000 J/KG...WITHIN THE PRESENCE OF STRONG DEEP
   LAYER SHEAR.  LARGE HAIL/LOCALLY DAMAGING WIND GUSTS MAY BE THE
   PRIMARY THREATS...BUT ISOLATED TORNADOES ARE POSSIBLE.
   
   ..KERR.. 05/13/2008
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...EWX...SJT...
   
   35919712 36049568 35969412 35149457 33489557 32219622
   31169679 31039816 31139929 31159960 32489898 34379800 
   
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