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Severe Thunderstorm Warning 0045
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-05-17 18:30:33 2026-05-17 18:30:00 2026-05-17 19:45:00
Cancelled 2026-05-17 19:00:04 2026-05-17 19:45:00
Continued 2026-05-17 19:00:04 2026-05-17 19:45:00
Continued 2026-05-17 19:14:34 2026-05-17 19:45:00
Cancelled 2026-05-17 19:14:34 2026-05-17 19:45:00
Expired 2026-05-17 19:42:35 2026-05-17 19:45:00


Action: New
Issued At: 2026-05-17 18:30:33

435 
WUUS53 KFSD 172330
SVRFSD
IAC059-143-MNC033-063-101-105-180045-
/O.NEW.KFSD.SV.W.0045.260517T2330Z-260518T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
630 PM CDT Sun May 17 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Osceola County in northwestern Iowa...
  Dickinson County in northwestern Iowa...
  Jackson County in southwestern Minnesota...
  Eastern Nobles County in southwestern Minnesota...
  Southeastern Murray County in southwestern Minnesota...
  Southern Cottonwood County in southwestern Minnesota...

* Until 745 PM CDT.

* At 629 PM CDT, severe thunderstorms were located along a line
  extending from Fulda to near Round Lake to near Sibley, moving east
  at 35 mph.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Public. At 618 PM CDT, quarter sized hail was reported 5 
           miles southwest of Worthington.

  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...
  Ocheyedan, Brewster, Round Lake, and Harris around 635 PM CDT.
  Heron Lake around 640 PM CDT.
  Lake Park around 645 PM CDT.

Other locations in the path of these severe thunderstorms include
Lakefield, Windom, Jackson In Jackson County, Kilen Woods State Park,
Spirit Lake, Bergen, Okoboji, Orleans, Wahpeton, Bingham Lake and
West Okoboji.

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.

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...and southwestern Minnesota.

&&

LAT...LON 4350 9491 4345 9491 4333 9505 4329 9585
      4357 9574 4393 9567 4409 9486 4351 9485
TIME...MOT...LOC 2329Z 260DEG 31KT 4387 9559 4357 9550 4335 9574 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

BP


Action: Cancelled
Issued At: 2026-05-17 19:00:04

319 
WWUS53 KFSD 172359
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
659 PM CDT Sun May 17 2026

MNC101-180009-
/O.CAN.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Murray MN-
659 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MURRAY 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 4350 9491 4345 9491 4333 9505 4330 9569
      4355 9567 4371 9557 4385 9546 4397 9547
      4409 9486 4351 9485
TIME...MOT...LOC 2359Z 260DEG 31KT 4391 9526 4361 9518 4339 9542 

$$

IAC059-143-MNC033-063-105-180045-
/O.CON.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Osceola IA-Dickinson IA-Jackson MN-Nobles MN-Cottonwood MN-
659 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR EASTERN OSCEOLA...DICKINSON...JACKSON...SOUTHEASTERN NOBLES AND
SOUTHERN COTTONWOOD COUNTIES...

At 659 PM CDT, severe thunderstorms were located along a line
extending from 7 miles west of Windom to near Lakefield to near
Harris, moving east at 35 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
  Windom, Jackson In Jackson County, Lake Park, Orleans, Kilen Woods 
  State Park, Spirit Lake, Bergen, Okoboji, Wahpeton, Bingham Lake, 
  Arnolds Park, West Okoboji, Mountain Lake and Superior.

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 4350 9491 4345 9491 4333 9505 4330 9569
      4355 9567 4371 9557 4385 9546 4397 9547
      4409 9486 4351 9485
TIME...MOT...LOC 2359Z 260DEG 31KT 4391 9526 4361 9518 4339 9542 

TORNADO...POSSIBLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BP


Action: Continued
Issued At: 2026-05-17 19:00:04

319 
WWUS53 KFSD 172359
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
659 PM CDT Sun May 17 2026

MNC101-180009-
/O.CAN.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Murray MN-
659 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MURRAY 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 4350 9491 4345 9491 4333 9505 4330 9569
      4355 9567 4371 9557 4385 9546 4397 9547
      4409 9486 4351 9485
TIME...MOT...LOC 2359Z 260DEG 31KT 4391 9526 4361 9518 4339 9542 

$$

IAC059-143-MNC033-063-105-180045-
/O.CON.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Osceola IA-Dickinson IA-Jackson MN-Nobles MN-Cottonwood MN-
659 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR EASTERN OSCEOLA...DICKINSON...JACKSON...SOUTHEASTERN NOBLES AND
SOUTHERN COTTONWOOD COUNTIES...

At 659 PM CDT, severe thunderstorms were located along a line
extending from 7 miles west of Windom to near Lakefield to near
Harris, moving east at 35 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
  Windom, Jackson In Jackson County, Lake Park, Orleans, Kilen Woods 
  State Park, Spirit Lake, Bergen, Okoboji, Wahpeton, Bingham Lake, 
  Arnolds Park, West Okoboji, Mountain Lake and Superior.

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 4350 9491 4345 9491 4333 9505 4330 9569
      4355 9567 4371 9557 4385 9546 4397 9547
      4409 9486 4351 9485
TIME...MOT...LOC 2359Z 260DEG 31KT 4391 9526 4361 9518 4339 9542 

TORNADO...POSSIBLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BP


Action: Continued
Issued At: 2026-05-17 19:14:34

824 
WWUS53 KFSD 180014
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
714 PM CDT Sun May 17 2026

IAC059-143-MNC105-180023-
/O.CAN.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Osceola IA-Dickinson IA-Nobles MN-
714 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSCEOLA...DICKINSON
AND SOUTHEASTERN NOBLES COUNTIES 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 4350 9500 4350 9531 4366 9530 4382 9541
      4396 9529 4403 9486 4351 9485
TIME...MOT...LOC 0013Z 262DEG 31KT 4388 9513 4360 9502 4347 9510 

$$

MNC033-063-180045-
/O.CON.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Jackson MN-Cottonwood MN-
714 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR JACKSON AND SOUTHEASTERN COTTONWOOD COUNTIES...

At 713 PM CDT, severe thunderstorms were located along a line
extending from Windom to near Jackson In Jackson County to Orleans,
moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Windom, Jackson In Jackson County, Mountain Lake, Lakefield, Bergen,
Heron Lake, Bingham Lake, Kilen Woods State Park, Okabena, Alpha,
Wilder, and Delft.

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 4350 9500 4350 9531 4366 9530 4382 9541
      4396 9529 4403 9486 4351 9485
TIME...MOT...LOC 0013Z 262DEG 31KT 4388 9513 4360 9502 4347 9510 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BP


Action: Cancelled
Issued At: 2026-05-17 19:14:34

824 
WWUS53 KFSD 180014
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
714 PM CDT Sun May 17 2026

IAC059-143-MNC105-180023-
/O.CAN.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Osceola IA-Dickinson IA-Nobles MN-
714 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSCEOLA...DICKINSON
AND SOUTHEASTERN NOBLES COUNTIES 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 4350 9500 4350 9531 4366 9530 4382 9541
      4396 9529 4403 9486 4351 9485
TIME...MOT...LOC 0013Z 262DEG 31KT 4388 9513 4360 9502 4347 9510 

$$

MNC033-063-180045-
/O.CON.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Jackson MN-Cottonwood MN-
714 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR JACKSON AND SOUTHEASTERN COTTONWOOD COUNTIES...

At 713 PM CDT, severe thunderstorms were located along a line
extending from Windom to near Jackson In Jackson County to Orleans,
moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Windom, Jackson In Jackson County, Mountain Lake, Lakefield, Bergen,
Heron Lake, Bingham Lake, Kilen Woods State Park, Okabena, Alpha,
Wilder, and Delft.

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 4350 9500 4350 9531 4366 9530 4382 9541
      4396 9529 4403 9486 4351 9485
TIME...MOT...LOC 0013Z 262DEG 31KT 4388 9513 4360 9502 4347 9510 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BP


Action: Expired
Issued At: 2026-05-17 19:42:35

649 
WWUS53 KFSD 180042
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
742 PM CDT Sun May 17 2026

MNC033-063-180050-
/O.EXP.KFSD.SV.W.0045.000000T0000Z-260518T0045Z/
Jackson MN-Cottonwood MN-
742 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR JACKSON AND SOUTHEASTERN
COTTONWOOD COUNTIES WILL EXPIRE AT 745 PM CDT...

A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.

Remember, a Tornado Warning still remains in effect for a small 
portion of Cottonwood county and Jackson counties in Minnesota 
until 745pm!

&&

LAT...LON 4350 9500 4350 9531 4366 9530 4382 9541
      4396 9529 4403 9486 4351 9485
TIME...MOT...LOC 0040Z 260DEG 31KT 4392 9482 4364 9471 4351 9479 

$$

Meyers



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