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Mesoscale Discussion 1351
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   Mesoscale Discussion 1351
   NWS Storm Prediction Center Norman OK
   0238 PM CDT Wed Jul 19 2017

   Areas affected...Portions of southeast MN...southwest WI...northeast
   IA

   Concerning...Severe potential...Severe Thunderstorm Watch likely 

   Valid 191938Z - 192145Z

   Probability of Watch Issuance...95 percent

   SUMMARY...A compact convective system is spreading
   eastward/east-southeastward across MN with accompanying severe
   wind/hail potential. The issuance of a Severe Thunderstorm Watch
   downstream of Watch 420 is forthcoming.

   DISCUSSION...A compact, bowing MCS across southern MN is moving
   eastward to east-southeastward around 50 kt. This activity has
   recently attained more of a southward component to its motion, as
   the air mass continues to strongly destabilize near and south of a
   warm-frontal zone along which this system is tracking. This activity
   has a history of producing severe wind gusts, and will pose severe
   wind/hail potential as it spreads downstream of Severe Thunderstorm
   Watch 420. Additional details regarding the evolution of this system
   are contained in Mesoscale Discussion 1348, and will be contained
   within a forthcoming MCD.

   ..Cohen/Coniglio/Hart.. 07/19/2017

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...ARX...

   LAT...LON   42959174 43099272 43899282 43989204 43819094 43419067
               43059106 42959174 

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Page last modified: July 19, 2017
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