Mesoscale Discussion 0418
   NWS Storm Prediction Center Norman OK
   0530 PM CDT Tue Apr 05 2022

   Areas affected...Southern South Carolina

   Concerning...Tornado Watch 98...99...

   Valid 052230Z - 060000Z

   The severe weather threat for Tornado Watch 98, 99 continues.

   SUMMARY...Tornadic supercells ahead of the squall line will continue
   to pose a threat for significant tornadoes over the next 1-2 hours
   across southern South Carolina.

   DISCUSSION...Supercells ahead of an approaching squall line have
   maintained intensity and organization over the past hour. The
   effects of downstream diabatic cooling continue to be overcome by
   strong kinematics ahead of the parent cyclone to the
   north/northwest. Favorable low-level moisture (60+ F dewpoints)
   outlining the effective warm sector is matching the forward speed of
   these supercells, maintaining an environment with around 1000 J/kg
   MLCAPE and 300-400 m2/s2 0-1 km SRH (based on regional VWPs). This
   will support a continued tornado threat for the next 1-2 hours,
   possibly lasting into the mid to late evening hours for portions of
   coastal SC. Given the kinematic environment and VROT values noted
   with recent circulations, a couple of significant tornadoes are
   possible.

   ..Moore.. 04/05/2022

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

   ATTN...WFO...ILM...CHS...CAE...

   LAT...LON   32088120 32768112 33238105 33678053 33798002 33707953
               33387916 33177913 32767964 32438036 32058073 31928084
               32088120