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Mesoscale Discussion 484
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   Mesoscale Discussion 0484
   NWS Storm Prediction Center Norman OK
   0400 PM CDT Mon May 21 2018

   Areas affected...Southeast Wyoming...northeast Colorado...and a
   small portion of southwest Nebraska panhandle

   Concerning...Severe potential...Watch unlikely 

   Valid 212100Z - 212300Z

   Probability of Watch Issuance...20 percent

   SUMMARY...An isolated severe hail and wind threat will exist into
   early evening.

   DISCUSSION...Visible satellite imagery at 2345Z shows a few cells
   initiating over the the higher terrain of southeast Wyoming and
   northeast Colorado. MLCAPE values around 1000-1500 J/kg and
   effective bulk shear of 30-35 kts will support an isolated severe
   hail and wind threat. However, with the upper-level ridge axis over
   the area and modest height rises over the past few hours, the
   overall coverage of storms should remain isolated and not warrant a
   WW issuance.

   ..Wendt/Weiss.. 05/21/2018

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

   ATTN...WFO...GLD...BOU...CYS...

   LAT...LON   43090531 43250424 42030388 41040278 39830220 39010268
               39330368 39590483 40910539 41980562 43090531 

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Page last modified: May 21, 2018
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