Mesoscale Discussion 0149
   NWS Storm Prediction Center Norman OK
   0952 PM CST Tue Mar 03 2020

   Areas affected...portions of the Mid-Atlanitc

   Concerning...Severe potential...Watch unlikely 

   Valid 040352Z - 040545Z

   Probability of Watch Issuance...5 percent

   SUMMARY...A line of showers and thunderstorms capable of damaging
   winds is moving eastward across central Pennsylvania, northern
   Virginia, and western Maryland.

   DISCUSSION...Along the leading edge of an upper trough, a line of
   showers and storms have continued eastward across Ohio, western
   Pennsylvania, and northern West Virginia this evening. Multiple
   measured severe gusts have been noted throughout its lifespan
   including two recent measured severe wind gusts of 60 mph in western
   Maryland and northeast West Virginia, respectively. This line of
   storms has cycled in intensity with a couple increases of lightning
   activity and currently has relatively weak reflectivity returns per
   KLWX and KCCX. 

   These showers/storms are following in the wake of the a surface cold
   front and previous round of convection. However, the near-surface
   inversion is likely weak, with steep low-level lapse rates resulting
   in shallow convection and strong gradient winds upwards of 50-60
   knots within the unstable layer. Isolated damaging gusts are
   possible with this convection as it continues eastward, although the
   eastward extent is uncertain and may continue to the Atlantic Coast.

   ..Nauslar/Edwards.. 03/04/2020

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

   ATTN...WFO...PHI...BGM...AKQ...CTP...LWX...

   LAT...LON   39277812 39887767 40727744 41347747 41517681 41307575
               41047500 40547458 39917465 38997515 38467558 38357660
               38437783 38577898 39277812