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Mesoscale Discussion 191
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   Mesoscale Discussion 0191
   NWS Storm Prediction Center Norman OK
   0643 PM CST Sun Feb 19 2017

   Areas affected...Portions of western and central TX and southern OK

   Concerning...Severe Thunderstorm Watch 34...

   Valid 200043Z - 200245Z

   The severe weather threat for Severe Thunderstorm Watch 34
   continues.

   SUMMARY...Isolated severe storms will continue spreading northward
   and eastward across Watch 34 through the evening hours.

   DISCUSSION...Convection continues increasing in coverage along a
   boundary oriented north-northeast/south-southwest across western
   portions of Watch 34. During the next few hours, isolated instances
   of severe hail and wind may accompany the most vigorous updrafts --
   especially those maintaining more discrete/semi-discrete
   characteristics across the Edwards Plateau. With the 00Z sounding at
   Fort Worth and regional VAD wind profiles indicating an appreciable
   boundary-parallel flow component through much of the troposphere,
   upscale convective growth will continue through the evening. As this
   occurs, convection will gradually develop eastward, aided by cell
   propagation into the moderately unstable environment indicated by
   the aforementioned sounding. The primary hazard should transition
   toward isolated damaging wind gusts, and the severe risk is expected
   to diminish west of the consolidating convective line.

   ..Cohen.. 02/20/2017


   ATTN...WFO...FWD...OUN...EWX...SJT...

   LAT...LON   30269889 30270090 34639921 34629709 30269889 

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Page last modified: February 20, 2017
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