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Home Return to list Severe Thunderstorm Warning 0043 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 17:44:02
929
WUUS53 KFSD 172243
SVRFSD
IAC119-143-MNC101-105-133-172345-
/O.NEW.KFSD.SV.W.0043.260517T2243Z-260517T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
543 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Eastern Lyon County in northwestern Iowa...
Central Osceola County in northwestern Iowa...
Eastern Rock County in southwestern Minnesota...
Nobles County in southwestern Minnesota...
Southeastern Murray County in southwestern Minnesota...
* Until 645 PM CDT.
* At 542 PM CDT, severe thunderstorms were located along a line
extending from near Lismore to near Adrian to near Ellsworth,
moving northeast at 35 mph.
HAZARD...70 mph wind gusts and ping pong ball size hail.
SOURCE...Radar indicated. At 536 PM CDT, half dollar size hail was
reported 3 miles southwest of Magnolia.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Adrian, Ellsworth, Leota, and Lismore around 545 PM CDT.
Little Rock, Rushmore, and Wilmont around 550 PM CDT.
Other locations in the path of these severe thunderstorms include
Worthington, Fulda and Brewster.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
&&
LAT...LON 4335 9545 4330 9618 4360 9613 4377 9620
4405 9556 4394 9546
TIME...MOT...LOC 2242Z 244DEG 31KT 4373 9606 4364 9598 4346 9605
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
BP
Action: Continued Issued At: 2026-05-17 17:52:32
153
WWUS53 KFSD 172252
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
552 PM CDT Sun May 17 2026
IAC119-143-MNC101-105-133-172345-
/O.CON.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Lyon IA-Osceola IA-Rock MN-Nobles MN-Murray MN-
552 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EASTERN LYON...CENTRAL OSCEOLA...EASTERN ROCK...NOBLES AND
SOUTHEASTERN MURRAY COUNTIES...
At 551 PM CDT, severe thunderstorms were located along a line
extending from Lismore to near Adrian to near Little Rock, moving
east at 35 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Law enforcement. At 551 PM CDT, golf ball sized hail was
reported near Adrian, MN.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
These severe storms will be near...
Little Rock, Rushmore, Wilmont, and Lismore around 555 PM CDT.
Other locations in the path of these severe thunderstorms include
Worthington, Fulda, Brewster and Round Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
Prepare immediately for large hail and damaging winds. People
outside should move to a shelter, inside a strong building and away
from windows.
&&
LAT...LON 4335 9545 4330 9618 4360 9613 4377 9620
4405 9556 4394 9546
TIME...MOT...LOC 2251Z 249DEG 32KT 4373 9597 4364 9589 4346 9596
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
BP
Action: Continued Issued At: 2026-05-17 18:08:33
600
WWUS53 KFSD 172308
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
608 PM CDT Sun May 17 2026
MNC133-172317-
/O.CAN.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Rock MN-
608 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ROCK 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 4335 9545 4330 9618 4349 9615 4351 9605
4388 9596 4405 9556 4394 9546
TIME...MOT...LOC 2307Z 244DEG 31KT 4378 9582 4369 9574 4351 9581
$$
IAC119-143-MNC101-105-172345-
/O.CON.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Lyon IA-Osceola IA-Nobles MN-Murray MN-
608 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EASTERN LYON...CENTRAL OSCEOLA...NOBLES AND SOUTHEASTERN MURRAY
COUNTIES...
At 607 PM CDT, severe thunderstorms were located along a line
extending from Wilmont to near Rushmore to near Little Rock, moving
northeast at 35 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Public. At 554 PM CDT, golf ball sized hail was reported in
Lismore, MN.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
These severe storms will be near...
Worthington and Rushmore around 610 PM CDT.
Other locations in the path of these severe thunderstorms include
Fulda and Brewster.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4335 9545 4330 9618 4349 9615 4351 9605
4388 9596 4405 9556 4394 9546
TIME...MOT...LOC 2307Z 244DEG 31KT 4378 9582 4369 9574 4351 9581
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
BP
Action: Cancelled Issued At: 2026-05-17 18:08:33
600
WWUS53 KFSD 172308
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
608 PM CDT Sun May 17 2026
MNC133-172317-
/O.CAN.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Rock MN-
608 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ROCK 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 4335 9545 4330 9618 4349 9615 4351 9605
4388 9596 4405 9556 4394 9546
TIME...MOT...LOC 2307Z 244DEG 31KT 4378 9582 4369 9574 4351 9581
$$
IAC119-143-MNC101-105-172345-
/O.CON.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Lyon IA-Osceola IA-Nobles MN-Murray MN-
608 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EASTERN LYON...CENTRAL OSCEOLA...NOBLES AND SOUTHEASTERN MURRAY
COUNTIES...
At 607 PM CDT, severe thunderstorms were located along a line
extending from Wilmont to near Rushmore to near Little Rock, moving
northeast at 35 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Public. At 554 PM CDT, golf ball sized hail was reported in
Lismore, MN.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
These severe storms will be near...
Worthington and Rushmore around 610 PM CDT.
Other locations in the path of these severe thunderstorms include
Fulda and Brewster.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
&&
LAT...LON 4335 9545 4330 9618 4349 9615 4351 9605
4388 9596 4405 9556 4394 9546
TIME...MOT...LOC 2307Z 244DEG 31KT 4378 9582 4369 9574 4351 9581
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
BP
Action: Continued Issued At: 2026-05-17 18:23:03
145
WWUS53 KFSD 172322
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
622 PM CDT Sun May 17 2026
IAC119-143-MNC101-105-172345-
/O.CON.KFSD.SV.W.0043.000000T0000Z-260517T2345Z/
Lyon IA-Osceola IA-Nobles MN-Murray MN-
622 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHEASTERN LYON...CENTRAL OSCEOLA...EASTERN NOBLES AND
SOUTHEASTERN MURRAY COUNTIES...
At 622 PM CDT, severe thunderstorms were located along a line
extending from 7 miles south of Fulda to near Worthington to near
Ashton, moving east at 35 mph.
HAZARD...70 mph wind gusts and ping pong ball size hail.
SOURCE...Public. At 554 PM CDT, golf ball sized hail was reported in
Lismore, MN.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
These severe storms will be near...
Worthington, Sibley, Ocheyedan, Brewster, and Round Lake around
625 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
&&
LAT...LON 4335 9545 4331 9605 4348 9596 4358 9577
4375 9576 4397 9572 4405 9556 4394 9546
TIME...MOT...LOC 2322Z 262DEG 30KT 4376 9562 4356 9557 4335 9582
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
BP
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