Mesoscale Discussion 0826
   NWS Storm Prediction Center Norman OK
   0926 PM CDT Sun May 26 2019

   Areas affected...far northeast Virginia into central Maryland and
   Delaware

   Concerning...Severe Thunderstorm Watch 258...

   Valid 270226Z - 270400Z

   The severe weather threat for Severe Thunderstorm Watch 258
   continues.

   SUMMARY...Isolated damaging wind gusts remain possible with some of
   the stronger storms in the near term, but a downward trend in
   convective intensity suggests that the severe threat is subsiding to
   a degree.

   DISCUSSION...KDOX radar depicts semi-discrete storms merging into a
   single quai-linear cluster across central Maryland, towards the
   Delaware border. Cold pool development associated with these cell
   mergers in a weak low-level sheared environment has allowed
   convective outflow to outrun the leading edge of the developing
   convective line. In the short term, the more intense downdrafts may
   still produce isolated damaging wind gusts. Otherwise, convective
   outflow will likely continue to undercut convection, and with
   nocturnal boundary layer stabilization, storms should continue to
   gradually weaken with time as they approach Atlantic Coast.

   ..Squitieri/Grams.. 05/27/2019

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

   ATTN...WFO...PHI...AKQ...LWX...

   LAT...LON   38457760 39617761 39377528 38217529 38457760