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Mesoscale Discussion 57
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   Mesoscale Discussion 0057
   NWS Storm Prediction Center Norman OK
   0813 PM CST Sun Jan 15 2017

   Areas affected...Central/North Central Texas

   Concerning...Tornado Watch 8...

   Valid 160213Z - 160415Z


   The severe weather threat for Tornado Watch 8 continues.

   SUMMARY...Isolated tornado threat remains across most of WW08.

   DISCUSSION...Long-lived supercell that developed over central TX has
   lifted north into the south side of the Metroplex, currently over
   eastern Johnson county.  Several tornadoes have likely been produced
   with this cyclical storm.  Air mass over eastern Tarrant and Dallas
   counties has recovered sufficiently, with dew points near 64F, for
   this near-surface based storm to maintain its intensity as it tracks
   into southeast Tarrant county and likely into western Dallas county.

   Well-organized squall line is progressing steadily east at roughly
   30kt and should track across the remainder of the watch over the
   next few hours.  A few supercells are embedded along the southern
   portion of this line and this activity should approach the
   western/northern portions of the San Antonio metro within the next
   1-2 hours.

   ..Darrow.. 01/16/2017


   LAT...LON   29719977 32949834 32949626 29709777 29719977 

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