US Mesoscale Discussions

Storm Prediction Center Mesoscale Discussion 1008

   Mesoscale Discussion 1008
   NWS Storm Prediction Center Norman OK
   1252 AM CDT Mon May 27 2024

   Areas affected...southeastern Arkansas...northern
   Louisiana...western and Middle Tennessee...northern
   Mississippi...and northern Alabama

   Concerning...Tornado Watch 326...328...329...

   Valid 270552Z - 270745Z

   The severe weather threat for Tornado Watch 326, 328, 329 continues.

   SUMMARY...Strong/locally severe storms continue within a band from
   northern and western Tennessee west-southwestward to the Arklatex. 
   Risk for locally damaging winds and hail, and a tornado or two,
   continues.  Southeastward expansion of the convection into northern
   parts of Mississippi and Alabama will likely require new WW

   DISCUSSION...Latest radar loop shows a continues line of storms
   extending west-southwest to east-northeast across northern Middle
   and western Tennessee, which is sagging slowly southward. 
   Meanwhile, a broken -- but more intense -- band of storms extends
   from western Tennessee southwestward to the Arklatex region.  This
   convection is ongoing within a much more unstable environment
   (mixed-layer CAPE 3000 to 5000 J/kg across this area), and is a bit
   less shear-parallel than the more west-to-east Tennessee band of

   As this stronger convection shifts gradually eastward over the next
   1 to 2 hours, it will begin to impinge on eastern portions of WW 328
   and, later, 329.  Other, isolated storms are also developing across
   northwestern Alabama, south of the Middle Tennessee line of storms. 
   Overall, with ample instability extending into northern Mississippi
   and -- to a lesser degree -- northern Alabama, new WW issuance will
   likely be needed soon over portions of northern Mississippi and
   northern Alabama.  Southeastward extent of the risk should remain
   limited (into Georgia, and central portions of Alabama), given much
   weaker instability, and higher convective inhibition.

   ..Goss.. 05/27/2024

   ...Please see for graphic product...


   LAT...LON   35638594 35418555 34698567 33858600 33218976 32479262
               32779341 33719267 35488938 35708807 35828712 35638594 

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