Storm Prediction Center Mesoscale Discussion 1739

   Mesoscale Discussion 1739
   NWS Storm Prediction Center Norman OK
   1100 PM CDT Sat Jul 25 2026

   Areas affected...South-Central MN...North-Central IA

   Concerning...Severe Thunderstorm Watch 515...

   Valid 260400Z - 260600Z

   The severe weather threat for Severe Thunderstorm Watch 515
   continues.

   SUMMARY...Threat for strong gusts and isolated large hail remains
   across south-central Minnesota and north-central Iowa.

   DISCUSSION...Ongoing MCS has decayed significantly over the past
   hour, with the gust front now well ahead of the main body of
   precipitation. The gust front is likely deep enough to force new
   development, which appears to be occurring across Cottonwood County
   MN as well as Buena Vista County IA. Redevelopment along the gust
   front will allow for continued eastward/southeastward progression of
   the front, although it will likely slow over time as its depth and
   the strength of convection along it both decrease. Strong gusts will
   remain the primary threat. Steep mid-level lapse rates and strong
   vertical shear could also support some isolated large hail within
   any redevelopment along the front.

   ..Mosier.. 07/26/2026

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

   ATTN...WFO...MPX...DMX...FSD...

   LAT...LON   43649554 44219513 44059382 43609314 42339322 42269442
               42589552 43649554 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN