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Mesoscale Discussion 326
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MD 326 graphic

   Mesoscale Discussion 0326
   NWS Storm Prediction Center Norman OK
   0435 PM CDT Sat Apr 13 2019

   Areas affected...Portions of eastern Louisiana and southwest

   Concerning...Tornado Watch 54...

   Valid 132135Z - 132230Z

   The severe weather threat for Tornado Watch 54 continues.

   SUMMARY...The tornado threat will be maximized across eastern
   Louisiana and portions of southwest Mississippi along the I-20
   corridor over the next 1 to 2 hours.

   DISCUSSION...21Z surface analysis shows a warm front along the I-20
   corridor from Vicksburg to Jackson, MS. Along and south of this
   boundary is where the tornado threat will be maximized over the next
   1 to 2 hours. Very strong (30 to 35 knot) sustained southeasterly
   surface winds are present across most surface observing stations
   south of this warm front. The DGX VWP shows these winds veering and
   strengthening to around 50 knots around 1.5 to 2 km above the
   surface which yields 0-1 SRH around 250 to 300 m2/s2. A
   line-embedded supercell currently moving into Mississippi in
   southwest Warren county has taken advantage of this streamwise
   vorticity rich environment with a consistent 50 to 60 knot Vrot over
   the last 15 to 20 minutes from the KDGX WSR-88D. This storm, and any
   additional strong updrafts which can develop in this area within the
   next 1 to 2 hours have the potential to produce significant
   tornadoes given the low level thermodynamic and kinematic

   ..Bentley.. 04/13/2019

   ...Please see for graphic product...


   LAT...LON   31879277 32259215 32729121 32859059 32889016 32548984
               32299011 32069064 31829120 31619209 31549245 31639280

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