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Mesoscale Discussion 690
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   Mesoscale Discussion 0690
   NWS Storm Prediction Center Norman OK
   1017 PM CDT Sat Jun 09 2018

   Areas affected...parts of eastern Iowa into southwest Wisconsin and
   northwest Illinois

   Concerning...Severe Thunderstorm Watch 167...

   Valid 100317Z - 100515Z

   The severe weather threat for Severe Thunderstorm Watch 167
   continues.

   SUMMARY...Risk for damaging winds and marginal hail continues across
   WW 167.

   DISCUSSION...Latest radar loop shows a complex cluster of storms
   moving east-southeast across east-central and northeast Iowa at this
   time.  Some acceleration of forward motion has been noted, and
   expect this to continue -- with eventual evolution into a single,
   bowing MCS expected, as the main band of storms overtakes a leading
   cluster of cells just to the southeast of the main band.

   While the possibility of marginally severe hail continues with
   stronger cores, expect a gradual transition toward locally damaging
   winds as the main severe risk, before an expected decrease in severe
   potential overnight.

   ..Goss.. 06/10/2018

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

   ATTN...WFO...LOT...ILX...MKX...DVN...ARX...DMX...

   LAT...LON   41969320 42489271 42629162 42849017 42448881 41438876
               41108907 41159064 41459234 41969320 

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Page last modified: June 10, 2018
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