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Mesoscale Discussion 720
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   Mesoscale Discussion 0720
   NWS Storm Prediction Center Norman OK
   0225 AM CDT Wed Jun 13 2018

   Areas affected...East-central Colorado

   Concerning...Severe potential...Watch unlikely 

   Valid 130725Z - 131000Z

   Probability of Watch Issuance...20 percent

   SUMMARY...An isolated severe threat will likely continue for several
   more hours across parts of east-central Colorado. Large hail and a
   few strong wind gusts will be possible. The threat is expected to
   remain isolated and a weather watch will probably not be needed.

   DISCUSSION...Radar imagery shows a couple of supercells have
   developed along the eastern edge of the Palmer Divide. The storms
   appear to have initiated due to an outflow boundary that is
   interacting with the higher terrain. The storms are developing on
   the western edge of a narrow corridor of moderate instability with
   the RAP estimating MLCAPE in the 1500 to 2500 J/kg range. In
   addition, the Pueblo WSR-88D VWP is showing 0-6 km shear of 40-45 kt
   which will be supportive of supercell structures. Large hail will be
   the primary threat although a few strong wind gusts will also be
   possible. Storm development is forecast to take place eastward along
   the instability gradient and may impact areas near the Colorado and
   Kansas state-line later tonight, especially as low-level flow
   increases across the High Plains.

   ..Broyles/Thompson.. 06/13/2018

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

   ATTN...WFO...GLD...PUB...BOU...

   LAT...LON   38520456 38470373 38460308 38570193 38680154 38870133
               39220129 39430149 39620189 39620328 39530459 38860494
               38520456 

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Page last modified: June 13, 2018
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