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Mesoscale Discussion 1358
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MD 1358 graphic

   Mesoscale Discussion 1358
   NWS Storm Prediction Center Norman OK
   1001 PM CDT Wed Jul 19 2017

   Areas affected...Southwest Lower MI...Northern IN

   Concerning...Severe potential...Watch unlikely 

   Valid 200301Z - 200500Z

   Probability of Watch Issuance...20 percent

   SUMMARY...Strong thunderstorms are possible across portions of
   northern IN and southwest lower MI. Isolated damaging winds are the
   primary threat.

   DISCUSSION...Long-lived MCS continues its southeast movement across
   southern WI and northern IL. This complex of storms has cycled and
   matured, and now appears to be waning with warming cloud tops and
   weaker wind gusts along the leading squall line. Regional radar data
   suggests an MCV has evolved within trailing precip shield over
   southern WI and this feature is moving southeast toward southern
   Lake MI. While the MCS appears to be weakening somewhat, it remains
   organized and a well defined squall line is expected to progress
   across southern Lake MI into northern IN over the next 1-2 hours.
   Unless severe wind gusts become more common with an upward cycling
   of this complex a new ww is not anticipated.

   ..Darrow/Guyer.. 07/20/2017

   ...Please see for graphic product...


   LAT...LON   42128665 41738520 40238567 40458735 42128665 

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