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Mesoscale Discussion 229
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   Mesoscale Discussion 0229
   NWS Storm Prediction Center Norman OK
   0535 PM CDT Tue Mar 24 2020

   Areas affected...northern AL and southern middle TN

   Concerning...Tornado Watch 61...

   Valid 242235Z - 250000Z

   The severe weather threat for Tornado Watch 61 continues.

   SUMMARY...Tornado potential will likely maximize through 8pm CDT
   near the AL/TN border.  A strong tornado is possible.

   DISCUSSION...Trends in KHTX VAD data show a strengthening of the
   wind field in the 2-3km layer during the past 1-2 hours.  This trend
   seemed to be necessary in order for more organized low-level
   mesocyclone development.  The intensification of flow is resulting
   in around 300 m2/s2 0-1km SRH per observed storm motions.  Surface
   observations show temperature/dewpoint spreads around 10 deg F and
   reduced mixing compared to areas farther south.  It continues to
   appear that the corridor for greatest tornado risk will focus near
   the AL/TN border with the stronger updrafts/supercells through the
   early evening.

   ..Smith.. 03/24/2020

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

   ATTN...WFO...OHX...HUN...MEG...

   LAT...LON   35008807 35298740 35318629 35108604 34828598 34578616
               34518795 34678819 35008807 

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Page last modified: March 25, 2020
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