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Mesoscale Discussion 698
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   Mesoscale Discussion 0698
   NWS Storm Prediction Center Norman OK
   0430 PM CDT Sun Jun 10 2018

   Areas affected...west-central IL into far northeast and east-central
   MO

   Concerning...Severe Thunderstorm Watch 168...

   Valid 102130Z - 102300Z

   The severe weather threat for Severe Thunderstorm Watch 168
   continues.

   SUMMARY...Isolated storms have developed across parts of
   west-central IL near the western edge of WW 168. Should convective
   trends warrant, a westward expansion of WW 168 may be needed.

   DISCUSSION...An outflow boundary is draped across the MCD area, left
   behind by early MCD/bow echo now tracking across east-central IL and
   IN. Storms have begun to develop in the vicinity of this boundary
   across parts of western IL from Adams County to SPI. Furthermore, a
   healthy CU field is present in visible satellite imagery across
   parts of northeast MO and west-central IL along axis of great
   instability and on the southern periphery of modest deep layer
   shear. Should convection intensify and become better organized 
   along the outflow boundary and/or develop in the warm sector ahead
   of the boundary, WW 168 may need to be expanded westward to address
   this threat. Convective trends will be monitored.

   ..Leitman.. 06/10/2018

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

   ATTN...WFO...ILX...LSX...DVN...

   LAT...LON   39789228 40119227 40289179 40249117 40089064 39689005
               39478976 39298965 39018975 38879011 38849066 38989180
               39439226 39789228 

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Page last modified: June 10, 2018
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