US Mesoscale Discussions

Storm Prediction Center Mesoscale Discussion 1140

   Mesoscale Discussion 1140
   NWS Storm Prediction Center Norman OK
   0746 PM CDT Sun Jun 02 2024

   Areas affected...East Texas...Central and Northern Louisiana...Far
   Southwest Arkansas

   Concerning...Severe Thunderstorm Watch 373...380...381...

   Valid 030046Z - 030245Z

   The severe weather threat for Severe Thunderstorm Watch 373, 380,
   381 continues.

   SUMMARY...A severe threat is expected to maintained across much of
   east Texas over the next few hours. Wind damage and hail will be the
   primary threats. The severe threat is expected to impact far
   southwest Arkansas and northern/western Louisiana later this
   evening, where a watch or extension may be needed.

   DISCUSSION...The latest mosaic radar imagery shows a linear MCS
   ongoing across northeast Texas, with a warm advection wing of storms
   extending southeastward into the Sabine River Valley. The airmass
   ahead of the linear MCS is strongly unstable, with surface dewpoints
   in the mid 70s F, and the RAP analyzing MLCAPE in the 3000 to 3500
   J/kg range. The severe threat will likely be maintained with the
   stronger cells embedded the MCS over the next few hours. The latest
   WSR-88D VWP at Shreveport has 0-6 km shear near 60 knots with strong
   speed shear in the mid-levels. In addition, mid-level flow appears
   to be maximized behind the MCS, as evident on RAP analysis. This
   should help continue a wind-damage threat along the leading edge of
   the MCS, as it moves southeastward at about 30 knots. The line of
   strong to severe storms will likely impact southwest Arkansas and
   western/northern Louisiana later this evening, where new watch
   issuance or an extension is possible.

   ..Broyles.. 06/03/2024

   ...Please see for graphic product...


   LAT...LON   32599635 32269739 31909753 31509724 31119643 30669501
               30579348 31259250 32079205 32979218 33809366 33879462
               33559487 32889551 32599635 

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