Storm Prediction Center Mesoscale Discussion 521

   Mesoscale Discussion 0521
   NWS Storm Prediction Center Norman OK
   0530 PM CDT Fri Apr 24 2026

   Areas affected...from southeast Oklahoma into the ArkLaTex area

   Concerning...Tornado Watch 141...

   Valid 242230Z - 250100Z

   The severe weather threat for Tornado Watch 141 continues.

   SUMMARY...A narrow corridor of tornado risk is evident over
   southeast Oklahoma, with threat expanding southeastward toward the
   ArkLaTex this evening. Damaging winds and hail will also be likely.

   DISCUSSION...Severe storms persist near the synoptic cold front from
   south of Ft. Smith into southeast OK. Intersecting this front is an
   outflow boundary which is pushing west/southwest out of AR and into
   northeast TX and northern LA. This same boundary appears to be
   hanging up over southeast OK ahead of the severe storms.

   The tornadic supercell over southern Pittsburg County is moving
   toward Pushmataha County, which is near the intersecting boundaries.
   Low-level shear in this area, as well as into northeast TX/southwest
   AR is sufficient to support tornadoes with 0-1 SRH over 100 m2/s2.
   The air mass is very moist and unstable, with deep-layer shear
   around 50 kt aiding storm longevity. 

   As such, these cells may continue to pose a tornado risk as they
   interact with the outflow boundary to the southeast. Other cells to
   the west may contain hail and damaging winds, with cells north of
   the outflow also producing hail into AR.

   ..Jewell.. 04/24/2026

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

   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...

   LAT...LON   34899540 34899424 34559360 33949313 33159273 32439315
               32369383 32479429 32999543 33229651 33609704 34149716
               34469676 34899540 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN