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Mesoscale Discussion 529
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   Mesoscale Discussion 0529
   NWS Storm Prediction Center Norman OK
   0156 PM CDT Fri Apr 26 2024

   Areas affected...parts of northern into northeastern Texas

   Concerning...Tornado Watch 139...

   Valid 261856Z - 262100Z

   The severe weather threat for Tornado Watch 139 continues.

   SUMMARY...The threat of tornadic supercells persist along a corridor
   roughly from the Waco area into northeast Texas.

   DISCUSSION...A cluster of supercells, some tornadic, is ongoing just
   north and northeast of Waco TX. These cells are on the north side of
   a weak surface theta-e gradient, with southwest winds just off the
   surface aiding advection/inflow into the storm region. 

   VWPs also show 0-1 SRH over 200 m2/s2 which, along with the moist
   unstable air mass, will continue to favor tornadoes within the
   supercells. The threat may persist downstream through late afternoon
   given increased heating from eastern TX into LA, with persistent
   southerly winds aiding warm advection.

   Additional cells may reform anywhere ahead of the dryline as well,
   currently west of the ongoing tornadic supercells. Though low-level
   winds are more veered in that area, shear will continue to favor
   supercells.

   ..Jewell/Hart.. 04/26/2024

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

   ATTN...WFO...SHV...FWD...

   LAT...LON   31679660 31379772 31499790 31689782 32269717 32869595
               32999566 33039518 32859491 32539477 32369479 32139521
               31679660 

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