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Mesoscale Discussion 332
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MD 332 graphic

   Mesoscale Discussion 0332
   NWS Storm Prediction Center Norman OK
   0208 AM CDT Thu Apr 08 2021

   Areas affected...Portions of coastal LA/MS/AL

   Concerning...Severe potential...Watch unlikely 

   Valid 080708Z - 080915Z

   Probability of Watch Issuance...20 percent

   SUMMARY...Mainly an isolated threat for damaging winds continues
   early this morning. Watch issuance remains unlikely.

   DISCUSSION...Convection across southern LA has evolved into multiple
   small bowing segments over the past couple of hours. Occasional
   strong to damaging winds remain possible with two of these segments
   over a small part of coastal southeastern LA at 07Z. Recent VWPs
   from KLIX still show a strongly veering and strengthening wind
   profile with height through mid levels. 0-1 km shear of 35 kt and
   0-1 SRH around 200-300 m2/s2 clearly favor the potential for updraft
   rotation and a brief tornado. Multiple, but generally weak,
   low-level circulations embedded within the bowing segments have
   occurred early this morning. Current expectations are for this
   isolated severe threat to continue for at least the next couple of
   hours as storms move eastward from coastal southeastern LA into
   southern MS/AL. Surface observations show that low-level moisture
   gradually decreases with eastward extent, and mesoanalysis estimates
   show a similar decrease in boundary-layer instability. Ongoing
   strong to severe storms should eventually weaken as they encounter a
   less unstable airmass. Watch issuance will probably not be needed,
   as the spatial and temporal extents of the severe threat are
   expected to remain small/short.

   ..Gleason/Edwards.. 04/08/2021

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

   ATTN...WFO...MOB...JAN...LIX...

   LAT...LON   30429078 30879009 31048945 31108868 31008792 30858767
               30248767 30168873 30008909 29738926 29638948 29909044
               30429078 

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Page last modified: April 08, 2021
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