576
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
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