Storm Prediction Center Mesoscale Discussion 606

   Mesoscale Discussion 0606
   NWS Storm Prediction Center Norman OK
   0552 PM CDT Tue Apr 28 2026

   Areas affected...Much of Arkansas...northwest Louisiana...Northeast
   Texas...Southeast Oklahoma

   Concerning...Tornado Watch 170...177...

   Valid 282252Z - 290045Z

   The severe weather threat for Tornado Watch 170, 177 continues.

   SUMMARY...Multiple clusters of thunderstorms will track into western
   AR this evening, with coverage of other storms increasing toward
   sunset.

   DISCUSSION...Three distinct clusters of severe/supercell storms are
   present this afternoon over OK/AR.  One is southeast of FYV, one
   near FSM, and a third near IDA.  These storms will track eastward
   for several more hours into a very moist and moderately unstable air
   mass.  Forecast soundings and the LZK VAD profile suggest sufficient
   low-level and deep-layer shear for continued supercell storm
   structures and a risk of all severe modes.  The low-level jet is
   expected to strengthen this evening around dusk, resulting in
   increased coverage of storms, and increasing the risk of a few
   tornadoes.

   New tornado watch #177 has just been issued for this area until 06z.

   ..Hart.. 04/28/2026

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

   ATTN...WFO...LZK...SHV...TSA...

   LAT...LON   34209505 35129443 35939393 36499289 36279228 34989251
               33629335 33059468 33289520 33739527 34209505 

   MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
   MOST PROBABLE PEAK WIND GUST...65-80 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN