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Mesoscale Discussion 233
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   Mesoscale Discussion 0233
   NWS Storm Prediction Center Norman OK
   1244 AM CST Wed Mar 01 2017

   Areas affected...Portions of southern Lower
   Michigan...northeastern/central Indiana...and northwestern Ohio

   Concerning...Severe Thunderstorm Watch 45...49...

   Valid 010644Z - 010745Z

   The severe weather threat for Severe Thunderstorm Watch 45, 49

   SUMMARY...A squall line will continue advancing east across the
   discussion area early this morning. An attendant threat for damaging
   winds will persist as these storms track east.

   DISCUSSION...With broader large-scale ascent (e.g., coupled upper
   jet structure) spreading across the Great Lakes region, rejuvenation
   of an ongoing squall line over southern Lower Michigan/northern
   Indiana has occurred. Despite some surface-based convective
   inhibition/weak low-level stability, the upscale organization of the
   line, combined with 1-km flow around 50 kts, will maintain a threat
   for occasional damaging wind gusts, especially in any bowing
   segments. Additionally, considering the magnitude of the low-level
   shear, a brief tornado remains possible.

   ..Picca.. 03/01/2017


   LAT...LON   40258766 41328639 42358556 42268374 41588313 40328399
               39948523 39898723 40048781 40258766 

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