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Home Return to list Severe Thunderstorm Warning 0042 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 16:56:45
471
WUUS53 KFSD 172156
SVRFSD
IAC119-MNC105-133-SDC099-172245-
/O.NEW.KFSD.SV.W.0042.260517T2156Z-260517T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
456 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Lyon County in northwestern Iowa...
Rock County in southwestern Minnesota...
Western Nobles County in southwestern Minnesota...
Southeastern Minnehaha County in southeastern South Dakota...
* Until 545 PM CDT.
* At 456 PM CDT, severe thunderstorms were located along a line
extending from Valley Springs to Larchwood to near Canton, moving
east at 40 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Larchwood, Inwood, Valley Springs, Hills, Beaver Creek, and Lester
around 500 PM CDT.
Luverne and Alvord around 505 PM CDT.
Rock Rapids and Blue Mounds State Park around 510 PM CDT.
Doon around 515 PM CDT.
Other locations in the path of these severe thunderstorms include
Ellsworth, George, Adrian, Lismore and Little Rock.
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 4326 9653 4342 9646 4362 9656 4385 9586
4326 9586
TIME...MOT...LOC 2156Z 252DEG 36KT 4359 9648 4343 9645 4329 9652
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 17:13:31
179
WWUS53 KFSD 172213
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
513 PM CDT Sun May 17 2026
SDC099-172223-
/O.CAN.KFSD.SV.W.0042.000000T0000Z-260517T2245Z/
Minnehaha SD-
513 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MINNEHAHA COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
&&
LAT...LON 4326 9644 4341 9642 4366 9644 4385 9586
4326 9586
TIME...MOT...LOC 2213Z 246DEG 36KT 4361 9632 4351 9627 4333 9634
$$
IAC119-MNC105-133-172245-
/O.CON.KFSD.SV.W.0042.000000T0000Z-260517T2245Z/
Lyon IA-Rock MN-Nobles MN-
513 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR LYON...ROCK AND WESTERN NOBLES COUNTIES...
At 513 PM CDT, severe thunderstorms were located along a line
extending from Beaver Creek to near Hills to Alvord, moving northeast
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.
Locations impacted include...
Luverne, Rock Rapids, Blue Mounds State Park, Ellsworth, Adrian,
Lismore and Little Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4326 9644 4341 9642 4366 9644 4385 9586
4326 9586
TIME...MOT...LOC 2213Z 246DEG 36KT 4361 9632 4351 9627 4333 9634
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Cancelled Issued At: 2026-05-17 17:13:31
179
WWUS53 KFSD 172213
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
513 PM CDT Sun May 17 2026
SDC099-172223-
/O.CAN.KFSD.SV.W.0042.000000T0000Z-260517T2245Z/
Minnehaha SD-
513 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MINNEHAHA COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
&&
LAT...LON 4326 9644 4341 9642 4366 9644 4385 9586
4326 9586
TIME...MOT...LOC 2213Z 246DEG 36KT 4361 9632 4351 9627 4333 9634
$$
IAC119-MNC105-133-172245-
/O.CON.KFSD.SV.W.0042.000000T0000Z-260517T2245Z/
Lyon IA-Rock MN-Nobles MN-
513 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR LYON...ROCK AND WESTERN NOBLES COUNTIES...
At 513 PM CDT, severe thunderstorms were located along a line
extending from Beaver Creek to near Hills to Alvord, moving northeast
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.
Locations impacted include...
Luverne, Rock Rapids, Blue Mounds State Park, Ellsworth, Adrian,
Lismore and Little Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4326 9644 4341 9642 4366 9644 4385 9586
4326 9586
TIME...MOT...LOC 2213Z 246DEG 36KT 4361 9632 4351 9627 4333 9634
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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