Mesoscale Discussion 0972
   NWS Storm Prediction Center Norman OK
   0518 PM CDT Mon Jun 14 2021

   Areas affected...Eastern Pennsylvania and New Jersey

   Concerning...Severe Thunderstorm Watch 270...

   Valid 142218Z - 150015Z

   The severe weather threat for Severe Thunderstorm Watch 270
   continues.

   SUMMARY...The environment ahead of an approaching cold front will
   remain supportive of strong to severe thunderstorms across WW 270
   over the next few hours.

   DISCUSSION...Surface analysis of observations across the
   Mid-Atlantic show a cold front continuing to push eastward across
   central to eastern PA. Ahead of this front temperatures remain in
   the 80s with dewpoints in the mid to upper 60s. This warm/moist
   boundary layer is supporting upwards of 1000-1500 J/kg MLCAPE with
   limited inhibition per recent mesoanalysis estimates. Recent GOES
   visible imagery shows agitated cumulus and a few convective towers
   across eastern PA into northern NJ, which support the thermodynamic
   estimates. Effective bulk shear values near 50 knots will help
   organized any stronger updrafts that develop along the front, and
   shear/boundary orientations suggest a mixture of embedded discrete
   and linear clusters that will pose a hail/damaging wind threat over
   the next few hours.

   ..Moore.. 06/14/2021

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

   ATTN...WFO...OKX...PHI...CTP...LWX...

   LAT...LON   40227660 40487610 40847528 41207483 41277422 41007383
               40517378 39967394 39447420 39257470 39327523 39517580
               39837646 40227660