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Mesoscale Discussion 148
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MD 148 graphic

   Mesoscale Discussion 0148
   NWS Storm Prediction Center Norman OK
   0622 PM CDT Mon Mar 19 2018

   Areas affected...Parts of Middle TN

   Concerning...Tornado Watch 14...

   Valid 192322Z - 200045Z

   The severe weather threat for Tornado Watch 14 continues.

   SUMMARY...An isolated tornado, large hail, and damaging wind threat
   continues across Tornado Watch 14.

   DISCUSSION...Cloudiness from earlier convection has hindered
   destabilization with northward extent across middle TN.
   Thunderstorms that have formed along a pre-frontal trough have
   struggled to strengthen thus far, likely owing to limited
   instability across this area. 23Z RAP mesoanalysis suggests MLCAPE
   generally ranges from 250 to no more than 500 J/kg across middle TN,
   with a warm front extending southeastward from a surface low near
   Nashville, TN. Still, even with the marginal thermodynamic
   environment, strong effective bulk shear will continue to support
   supercell structures, with an isolated tornado, large hail, and
   damaging wind threat remaining possible across WW 14 in the short

   ..Gleason.. 03/19/2018

   ...Please see for graphic product...


   LAT...LON   35818705 36598654 36608573 36158515 35598572 35818705 

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