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Mesoscale Discussion 790
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   Mesoscale Discussion 0790
   NWS Storm Prediction Center Norman OK
   0656 PM CDT Fri May 19 2017

   Areas affected...portions of north Texas...south central and eastern
   Oklahoma...and northwest Arkansas

   Concerning...Tornado Watch 249...

   Valid 192356Z - 200200Z

   The severe weather threat for Tornado Watch 249 continues.

   SUMMARY...Severe/isolated tornado threat continues across mainly
   northern/western parts of the watch area.

   DISCUSSION...Storms have been slow to develop across the bulk of
   watch 249 this afternoon and evening, with most storms remaining on
   the northwestern periphery of the watch.  Here, bands of
   thunderstorms -- including several bowing structures -- are ongoing.
    Hail and locally damaging winds remain the primary concern with
   these storms, though a brief tornado or two will remain possible
   within rotating portions of the convective bands.  With time, while
   individual convective clusters moving quickly northeastward, the
   overall band of convection will spread slowly east across the watch
   area as the surface cold front advances.

   Farther south into Texas, a few small isolated/rotating cells have
   evolved south of Stephenville (the Hamilton/Coryell County
   vicinity).  With storms ongoing just west of this convection across
   parts of Tornado Watch 246, severe risk will likely remain greater
   -- in a relative sense -- across the far southern portions of the
   watch as opposed to areas farther north into the DFW metroplex over
   the next 1-2 hours.

   ..Goss.. 05/19/2017

   ...Please see for graphic product...


   LAT...LON   33169920 33799921 35499651 36619460 36429330 34779425
               32559621 31559752 31179872 31599900 33169920 

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