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Mesoscale Discussion 726
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   Mesoscale Discussion 0726
   NWS Storm Prediction Center Norman OK
   1014 PM CDT Mon May 15 2017

   Areas affected...Southern Wisconsin and Northern Illinois

   Concerning...Severe Thunderstorm Watch 217...

   Valid 160314Z - 160415Z

   The severe weather threat for Severe Thunderstorm Watch 217
   continues.

   SUMMARY...A lingering severe wind threat will exist with the forward
   propagating linear segment across the discussion area.

   DISCUSSION...A line of convection with a history of significant wind
   and hail reports continues to move eastward at around 35-45 knots
   across south-central Wisconsin and adjacent northern Illinois. 
   Enough residing shear and instability exists for a continued
   damaging wind threat with this activity, especially in northern
   Illinois and far southern Wisconsin where some surface-based
   instability remains.  A southeastward spatial extension of the watch
   should be considered, especially if additional development occurs on
   the southern flank of the ongoing convective line over the next
   hour.

   ..Cook/Guyer.. 05/16/2017

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

   ATTN...WFO...LOT...MKX...

   LAT...LON   43298911 43318879 43098815 42698789 42048778 41608771
               41448790 41578858 41918921 42228928 42728927 43048926
               43298911 

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Page last modified: May 16, 2017
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