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Storm Prediction Center Mesoscale Discussion 880

Published Date and Time: 2026-05-27 19:09:00



Mesoscale Discussion 880
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   Mesoscale Discussion 0880
   NWS Storm Prediction Center Norman OK
   0554 PM CDT Wed May 27 2026

   Areas affected...West Virginia into central and southern parts of
   Virginia

   Concerning...Severe Thunderstorm Watch 247...

   Valid 272254Z - 280100Z

   The severe weather threat for Severe Thunderstorm Watch 247
   continues.

   SUMMARY...Isolated damaging wind gusts remain most likely across
   portions of central and southern Virginia over the next couple of
   hours.

   DISCUSSION...As of 22:45 UTC a broken band of strong to severe
   storms was ongoing from northeast of Roanoke to west of Richmond,
   with a storm motion of 282/38 kt. Latest surface analysis and
   visible satellite indicate a corridor of less-dense cloud cover to
   the south of the ongoing storms, where temperatures remain in the
   low/mid 80s with dewpoints in the upper 60s to low 70s. Resultant
   MLCAPE is estimated in the 1000-1500 J/kg range within that corridor
   with relatively steep low-level lapse rates. Area VWPs indicate
   westerly winds above 1 km AGL with 30-35 kt of deep-layer shear,
   which will continue to support some storm organization for the next
   couple of hours with the primary hazard being locally damaging wind
   gusts.

   Cooling boundary-layer temperatures and a corresponding increase in
   air mass stability are expected to lead to an increasingly sporadic
   severe threat by 01z.

   ..Mead.. 05/27/2026

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

   ATTN...WFO...AKQ...LWX...RAH...RNK...RLX...JKL...ILN...

   LAT...LON   36538052 37248091 37268172 37708227 38348270 38928276
               39248252 39248171 39218081 38917955 38687880 38237835
               38017838 37797834 37657782 37537723 37317642 37137598
               36927550 36617555 36487699 36538052 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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