US Mesoscale Discussions

Storm Prediction Center Mesoscale Discussion 258

Published Date and Time: 2025-03-23 21:25:00


   Mesoscale Discussion 0258
   NWS Storm Prediction Center Norman OK
   0824 PM CDT Sun Mar 23 2025

   Areas affected...parts of central Texas

   Concerning...Severe Thunderstorm Watch 62...63...

   Valid 240124Z - 240330Z

   The severe weather threat for Severe Thunderstorm Watch 62, 63
   continues.

   SUMMARY...Large hail will likely remain a threat for a few more
   hours this evening from the San Antonio area northeastward into
   east-central Texas and northern Louisiana.

   DISCUSSION...Slow-moving cells continue to evolve from northwest of
   San Antonio toward Austin, with an overall increase in areal
   coverage. Given these trends, it appears likely the hail threat in
   general will continue to propagate south over the next couple hours,
   posing a damaging hail risk with up to 2.00" diameter possible. The
   combination of the front, various outflow boundaries, and the
   diurnally deepened moist boundary layer all suggest storms will
   persist despite a slow increase in CIN.

   To the northeast, other clusters of storms were gradually increasing
   in size entering into northern Limestone and Freestone counties with
   hail and gusty wind risk. 

   Given the unstable air mass across the entire area ahead of the cold
   front, additional storms may develop this evening, with localized
   hail risk.

   ..Jewell.. 03/24/2025

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

   ATTN...WFO...SHV...HGX...FWD...EWX...

   LAT...LON   29959970 30309851 30859779 31379722 31639691 31839644
               32179566 32069532 31769499 31319474 30969482 30639518
               29919711 29089840 29409924 29669963 29959970 



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