Storm Prediction Center Mesoscale Discussion 874

   Mesoscale Discussion 0874
   NWS Storm Prediction Center Norman OK
   0521 AM CDT Wed May 27 2026

   Areas affected...Parts of South Texas

   Concerning...Severe Thunderstorm Watch 245...

   Valid 271021Z - 271145Z

   The severe weather threat for Severe Thunderstorm Watch 245
   continues.

   SUMMARY...A cluster of thunderstorms will continue to pose a risk of
   strong-severe wind gusts as it continues eastward to the Lower TX
   Coast.

   DISCUSSION...A forward-propagating thunderstorm cluster is tracking
   eastward at around 35-40 kt across South TX toward the Lower TX
   Coast. This activity is advancing along a zone of low-level
   confluence focused near an east/west-oriented outflow boundary.
   Given the well-established cold pool, moist pre-convective air mass,
   and around 40 kt of gust-front-orthogonal effective shear, this
   activity will continue to pose a risk of strong-severe gusts as it
   approaches the coast over the next hour or two.

   ..Weinman.. 05/27/2026

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

   ATTN...WFO...CRP...BRO...

   LAT...LON   27249858 27459847 27729840 28029847 28189831 28149754
               27999721 27689718 27289731 27099763 27109832 27249858 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN