Storm Prediction Center Mesoscale Discussion 1376

   Mesoscale Discussion 1376
   NWS Storm Prediction Center Norman OK
   0640 AM CDT Mon Jun 29 2026

   Areas affected...east-central into northeast South dakota

   Concerning...Severe Thunderstorm Watch 413...

   Valid 291140Z - 291345Z

   The severe weather threat for Severe Thunderstorm Watch 413
   continues.

   SUMMARY...A corridor of extreme tornado-like wind damage may persist
   for an hour or two into northeast South Dakota.

   DISCUSSION...A storm complex continues to travel quickly
   northeastward out of central SD. This complex has supercell
   characteristics, but is extremely large. Measured winds up to 131
   mph have occurred, with multiple 100+ mph gusts also measured.
   Though presumably straight-line winds, these speeds are firmly
   within the EF2 range.

   Given the longevity of this storm complex, similar wind speeds, at
   least 80 to 100 mph, appear likely to approach the Aberdeen SD area
   later this morning.

   ..Jewell.. 06/29/2026

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

   ATTN...WFO...ABR...

   LAT...LON   44639974 45699878 45809828 45579793 45359796 44459905
               44469935 44489959 44639974 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
   MOST PROBABLE PEAK WIND GUST...110+ MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN