Storm Prediction Center Mesoscale Discussion 175

   Mesoscale Discussion 0175
   NWS Storm Prediction Center Norman OK
   0929 PM CST Sat Mar 07 2026

   Areas affected...Deep South Texas

   Concerning...Severe Thunderstorm Watch 27...

   Valid 080329Z - 080500Z

   The severe weather threat for Severe Thunderstorm Watch 27
   continues.

   SUMMARY...Isolated severe thunderstorms remain possible across deep
   South Texas the next few hours. New severe thunderstorm watch is not
   anticipated.

   DISCUSSION...Surface front continues sagging south across deep South
   TX with the boundary now extending from Jim Wells to Zapata County.
   Most of the stronger elevated convection has weakened or dissipated,
   but isolated strong/severe thunderstorms are now focused along the
   wind shift across this region. Latest radar data suggests the
   strongest updrafts are just across the Rio Grande river over
   northeast Mexico, and this activity is likely only producing hail
   near 1 inch in diameter. Loss of heating will likely result in
   gradual weakening of this activity and a new watch is not
   anticipated.

   ..Darrow.. 03/08/2026

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

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

   LAT...LON   27029965 28119846 27919777 27109827 26359906 27029965 

   MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN