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Mesoscale Discussion 264
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   Mesoscale Discussion 0264
   NWS Storm Prediction Center Norman OK
   0700 PM CDT Thu Mar 25 2021

   Areas affected...central and northern AL...southern middle TN

   Concerning...Tornado Watch 50...

   Valid 260000Z - 260030Z

   The severe weather threat for Tornado Watch 50 continues.

   SUMMARY...A new tornado watch will likely be issued by 730-745pm CDT
   and effectively replace the ongoing PDS tornado watch set to expire
   at 800pm CDT.

   DISCUSSION...Radar mosaic shows several clusters of storms across AL
   and a band of storms near the TN/MS/AL border as of 7pm CDT. 
   Although a considerable amount of convection has led to rain-cooled
   temperatures and a reduction in instability over north-central and
   northern AL, a moist and adequately unstable airmass remains in
   place given the presence of mid 60s dewpoints near the TN border to
   upper 60s over south-central AL.  Very strong low to mid-level flow
   will conditionally support updraft rotation with established/mature
   updrafts.  It appears the overall severe risk has lessened compared
   to earlier this afternoon, but isolated large hail, damaging gusts,
   and a tornado threat will probably persist through much of the
   evening.  It is unclear whether more than a few storms will pose a
   severe risk, but the environment will at least favor some potential
   for severe.

   ..Smith/Grams.. 03/26/2021

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

   ATTN...WFO...MRX...OHX...BMX...HUN...MOB...

   LAT...LON   33108829 35288792 35248574 33828544 32818589 32018776
               32008835 33108829 

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