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Home Return to list Severe Thunderstorm Warning 0041 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 16:18:59
413
WUUS53 KFSD 172118
SVRFSD
IAC119-MNC133-SDC083-099-125-172200-
/O.NEW.KFSD.SV.W.0041.260517T2118Z-260517T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
418 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Western Lyon County in northwestern Iowa...
Southwestern Rock County in southwestern Minnesota...
Southern Minnehaha County in southeastern South Dakota...
Northern Lincoln County in southeastern South Dakota...
Northeastern Turner County in southeastern South Dakota...
* Until 500 PM CDT.
* At 418 PM CDT, severe thunderstorms were located along a line
extending from near Chancellor to near Lennox to near Worthing,
moving east at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Severe thunderstorms will be near...
Sioux Falls, Harrisburg, and Tea around 425 PM CDT.
Lake Alvin State Recreation Area around 435 PM CDT.
Other locations in the path of these severe thunderstorms include
Inwood, Brandon, Larchwood and Rowena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9704 4355 9708
TIME...MOT...LOC 2118Z 252DEG 36KT 4342 9700 4333 9686 4325 9683
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 16:29:59
733
WWUS53 KFSD 172129
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
429 PM CDT Sun May 17 2026
IAC119-MNC133-SDC083-099-125-172200-
/O.CON.KFSD.SV.W.0041.000000T0000Z-260517T2200Z/
Lyon IA-Rock MN-Minnehaha SD-Lincoln SD-Turner SD-
429 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR WESTERN LYON...SOUTHWESTERN ROCK...SOUTHERN MINNEHAHA...NORTHERN
LINCOLN AND NORTHEASTERN TURNER COUNTIES...
At 429 PM CDT, severe thunderstorms were located along a line
extending from near Tea to Worthing to 7 miles west of Canton, moving
east at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
These severe storms will be near...
Sioux Falls, Harrisburg, Tea, and Lake Alvin State Recreation Area
around 435 PM CDT.
Other locations in the path of these severe thunderstorms include
Larchwood, Inwood, Rowena, Brandon, Lester, Valley Springs, Hills and
Alvord.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9704 4355 9708
TIME...MOT...LOC 2129Z 252DEG 36KT 4344 9689 4335 9675 4327 9672
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 16:47:00
318
WWUS53 KFSD 172146
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
446 PM CDT Sun May 17 2026
SDC125-172156-
/O.CAN.KFSD.SV.W.0041.000000T0000Z-260517T2200Z/
Turner SD-
446 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TURNER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9692 4355 9688
TIME...MOT...LOC 2146Z 246DEG 31KT 4352 9668 4342 9654 4334 9651
$$
IAC119-MNC133-SDC083-099-172200-
/O.CON.KFSD.SV.W.0041.000000T0000Z-260517T2200Z/
Lyon IA-Rock MN-Minnehaha SD-Lincoln SD-
446 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR WESTERN LYON...SOUTHWESTERN ROCK...SOUTHEASTERN MINNEHAHA AND
NORTHERN LINCOLN COUNTIES...
At 446 PM CDT, severe thunderstorms were located along a line
extending from near Sioux Falls to near Lake Alvin State Recreation
Area to near Inwood, moving northeast at 35 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Sioux Falls, Brandon, Larchwood, Inwood, Rowena, Valley Springs,
Hills, Lester, Alvord and Corson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9692 4355 9688
TIME...MOT...LOC 2146Z 246DEG 31KT 4352 9668 4342 9654 4334 9651
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Cancelled Issued At: 2026-05-17 16:47:00
318
WWUS53 KFSD 172146
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
446 PM CDT Sun May 17 2026
SDC125-172156-
/O.CAN.KFSD.SV.W.0041.000000T0000Z-260517T2200Z/
Turner SD-
446 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TURNER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9692 4355 9688
TIME...MOT...LOC 2146Z 246DEG 31KT 4352 9668 4342 9654 4334 9651
$$
IAC119-MNC133-SDC083-099-172200-
/O.CON.KFSD.SV.W.0041.000000T0000Z-260517T2200Z/
Lyon IA-Rock MN-Minnehaha SD-Lincoln SD-
446 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR WESTERN LYON...SOUTHWESTERN ROCK...SOUTHEASTERN MINNEHAHA AND
NORTHERN LINCOLN COUNTIES...
At 446 PM CDT, severe thunderstorms were located along a line
extending from near Sioux Falls to near Lake Alvin State Recreation
Area to near Inwood, moving northeast at 35 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Sioux Falls, Brandon, Larchwood, Inwood, Rowena, Valley Springs,
Hills, Lester, Alvord and Corson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...southwestern Minnesota...and southeastern South Dakota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4366 9649 4347 9629 4335 9624 4326 9641
4327 9658 4332 9652 4339 9652 4341 9655
4340 9692 4355 9688
TIME...MOT...LOC 2146Z 246DEG 31KT 4352 9668 4342 9654 4334 9651
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
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