Storm Prediction Center Mesoscale Discussion 876

   Mesoscale Discussion 0876
   NWS Storm Prediction Center Norman OK
   0221 PM CDT Wed May 27 2026

   Areas affected...portions of the upper Ohio Valley...West
   Virginia...and the Mid Atlantic

   Concerning...Severe Thunderstorm Watch 247...

   Valid 271921Z - 272115Z

   The severe weather threat for Severe Thunderstorm Watch 247
   continues.

   SUMMARY...The severe risk continues across WW247. Several stronger
   clusters of storms have also been identified.

   DISCUSSION...Afternoon radar imagery over WW247 showed scattered to
   numerous thunderstorms ongoing over the watch area. The environment
   remains unstable and modestly sheared, which should continue to
   support the threat for damaging gusts and some hail with the
   strongest storms over much of the watch area.

   A corridor of locally greater severe potential is now apparent along
   a convectively modified boundary stretching from central VA
   northwestward into WV. Several clusters of stronger storms,
   including a supercell crossing the Chesapeake Bay, have become
   established along the boundary. The most unstable air mass (MLCAPE
   1500-2000 J/kg) and slightly stronger flow aloft resides along and
   south of the boundary, where locally enhanced convergence is also
   supporting an increase in convective coverage. This will likely
   support a few more robust storms with a concentrated risk for
   damaging gusts from southern WV into south central VA over the next
   few hours.

   ..Lyons.. 05/27/2026

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

   ATTN...WFO...AKQ...LWX...RNK...PBZ...RLX...

   LAT...LON   37938226 39128199 39318169 39568075 39468042 39267982
               38527824 38237697 38297619 37187538 36647571 36867713
               37498079 37588143 37708192 37848218 37938226 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN