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Mesoscale Discussion 903
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   Mesoscale Discussion 0903
   NWS Storm Prediction Center Norman OK
   0354 PM CDT Sun May 28 2017

   Areas affected...Northeastern Wyoming...southeastern
   Montana...northwestern Nebraska...much of South Dakota...southern
   North Dakota...and far western Minnesota

   Concerning...Severe potential...Watch unlikely 

   Valid 282054Z - 282200Z

   Probability of Watch Issuance...20 percent

   SUMMARY...Scattered convection continues to move southeastward
   through the discussion area, with strong to isolated severe wind
   gusts being the primary threats with this activity.

   DISCUSSION...Several 40-45 knot wind gusts have been reported over
   the past hour with scattered, relatively high-based thunderstorms
   across the discussion area.  An isolated severe wind gusts (54
   knots) was also reported at Faith, SD (KD07) in the past few
   minutes.  These storms are in an environment characterized by weak
   instability (generally less than 1000 J/kg MUCAPE) and strong flow
   aloft (around 50 knots at 500mb) that, when mixed with scattered
   updrafts and 30-45 F surface dewpoint depression, are fostering the
   occasional strong wind gusts.  A WW will likely not be needed for
   this activity given the ongoing sub-severe nature of most of the
   gusty winds.  This activity should wane after sunset with the onset
   of nocturnal boundary layer cooling.

   ..Cook.. 05/28/2017

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

   ATTN...WFO...DLH...MPX...FGF...FSD...ABR...BIS...LBF...UNR...
   CYS...BYZ...RIW...

   LAT...LON   44410681 45130554 45930257 46010219 46650000 47089826
               47259732 47369623 47159516 47059481 46239445 45609463
               44769651 43420068 42570163 42140309 42470507 43230665
               44410681 

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Page last modified: May 28, 2017
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