Mesoscale Discussion 0993
   NWS Storm Prediction Center Norman OK
   0622 PM CDT Sun May 26 2024

   Areas affected...Eastern OH...western PA...western MD...eastern
   WV...central VA

   Concerning...Severe Thunderstorm Watch 317...318...321...

   Valid 262322Z - 270045Z

   The severe weather threat for Severe Thunderstorm Watch 317, 318,
   321 continues.

   SUMMARY...Some damaging-wind potential will spread northeastward
   through the evening.

   DISCUSSION...A loosely organized QLCS with a history of producing
   some wind damage is moving across eastern OH/western PA into parts
   of eastern WV/central VA. While midlevel lapse rates are weak and
   instability gradually decreases with eastward extent, earlier
   diurnal heating resulted in some steepening of low-level lapse
   rates, and MLCAPE may remain around 500 J/kg in advance of the line
   this evening, though with gradually increasing MLCINH. The QLCS will
   likely continue to remain somewhat organized until decreasing
   instability and increasing inhibition becomes prohibitive later this
   evening.  

   Rather strong low-level flow (noted on regional VWPs) will continue
   to support some wind-damage potential with this QLCS as it advances
   northeastward. Some threat may eventually spread out of WW 318 and
   WW 321 into central PA, western MD, and northern/central VA, though
   the need for additional watch issuance remains uncertain.

   ..Dean/Smith.. 05/26/2024

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

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

   LAT...LON   37287955 39128015 40948107 41138111 41618053 41427948
               39667867 37617818 37257851 37247927 37287955