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Mesoscale Discussion 453
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   Mesoscale Discussion 0453
   NWS Storm Prediction Center Norman OK
   1017 PM CDT Wed Apr 22 2020

   Areas affected...Northern/Central LA

   Concerning...Tornado Watch 135...

   Valid 230317Z - 230445Z

   The severe weather threat for Tornado Watch 135 continues.

   SUMMARY...A corridor of increased severe potential, including the
   threat of a strong tornado, may be developing across central LA.

   DISCUSSION...Pair of discrete supercells moving into Natchitoches
   and Winn Parishes in central LA have recently shown signs of better
   low-level organization with stronger inflow/outflow structure and a
   more defined ZDR arc. Recent VAD profile from POE sampled 50 kt near
   1 km and over 400 m2/s2 of 0-1 km SRH. Some nocturnal stabilization
   has taken place but the very moist low-levels and already mature
   character of the storms suggest limited influence of this
   stabilization thus far. All of these factor suggest a corridor of
   increased severe potential, including the threat of a strong
   tornado, may be developing across central LA where STP is 4-6.

   ..Mosier.. 04/23/2020

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

   ATTN...WFO...JAN...LCH...SHV...

   LAT...LON   31609370 32109300 32269200 32049177 31499209 31239316
               31339365 31609370 

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