ACUS11 KWNS 280738

SWOMCD

SPC MCD 280737 

MNZ000-IAZ000-SDZ000-NEZ000-280930-



Mesoscale Discussion 1364

NWS Storm Prediction Center Norman OK

0237 AM CDT Sun Jun 28 2026



Areas affected...southeast South Dakota...southwest

Minnesota...northwest Iowa



Concerning...Severe Thunderstorm Watch 410...



Valid 280737Z - 280930Z



The severe weather threat for Severe Thunderstorm Watch 410

continues.



SUMMARY...A corridor of damaging winds may persist across southeast

South Dakota, with threat possibly extending into southwest

Minnesota and northwest Iowa.



DISCUSSION...Several severe cells currently exist near and just

north of the SD/NE border, and continue to move east. Earlier,

several gusts near 60 kt were reported, though more recent

measurements indicate somewhat lesser peak gusts closer to 50 kt

into the Wagner area.



A moist air mass remains ahead of this storm complex, driven by

strong warm advection with a 40-50 kt low-level jet. This should

support strong to severe storms at least across SD, and perhaps into

MN and IA an elevated influx of unstable air continues. Trends will

continue to be monitored for an additional watch.



..Jewell.. 06/28/2026



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



ATTN...WFO...FSD...OAX...



LAT...LON   43719813 43969700 44179566 43949532 43449511 43149513

            42889528 42789617 42799696 42869823 43299808 43719813 



MOST PROBABLE PEAK WIND GUST...55-70 MPH

MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN