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Mesoscale Discussion 885
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   Mesoscale Discussion 0885
   NWS Storm Prediction Center Norman OK
   0926 PM CDT Sat May 27 2017

   Areas affected...Northeast AR...MO Bootheel...Western TN

   Concerning...Tornado Watch 284...

   Valid 280226Z - 280400Z

   The severe weather threat for Tornado Watch 284 continues.

   SUMMARY...Widespread damaging winds will continue to be possible
   with the bowing line moving into northeast AR and eventually western
   TN. Local watch extension and/or new watch issuance will eventually
   be required.

   DISCUSSION...At 02Z, an intense bowing thunderstorm line is moving
   into northeast AR. This line recently produced a 61 kt wind gust at
   the Poplar Bluff ASOS site. With widespread thunderstorm activity
   and a southward moving outflow ahead of this line, there is some
   uncertainty regarding how this system will evolve with time.
   However, with ample buoyancy and shear feeding into the area from
   southwest, this system is expected to remain intense for at least
   the next few hours, with a continued threat of widespread damaging
   wind gusts spreading into northeast AR, the MO Bootheel, and western
   TN, including the Memphis area. 

   With time, this system will move out of WW 284 into portions of PDS
   WW 280, and then into areas currently not in either watch. With the
   severe threat expected to persist, local watch extension will likely
   be needed in the short term, with new watch issuance possible into
   portions of northern MS later this evening.

   ..Dean/Guyer.. 05/28/2017

   ...Please see for graphic product...


   LAT...LON   36129192 36449122 36799062 36679017 35898931 35098898
               34738975 34839038 35149104 35549176 35789191 36129192 

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