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Severe Thunderstorm Warning 0052
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-05-18 17:11:58 2026-05-18 17:11:00 2026-05-18 18:00:00
Continued 2026-05-18 17:19:28 2026-05-18 18:00:00
Cancelled 2026-05-18 17:36:59 2026-05-18 18:00:00
Continued 2026-05-18 17:36:59 2026-05-18 18:00:00
Continued 2026-05-18 17:43:29 2026-05-18 18:00:00
Expired 2026-05-18 17:54:45 2026-05-18 18:00:00


Action: New
Issued At: 2026-05-18 17:11:58

022 
WUUS53 KFSD 182211
SVRFSD
IAC035-093-149-193-182300-
/O.NEW.KFSD.SV.W.0052.260518T2211Z-260518T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
511 PM CDT Mon May 18 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Southern Cherokee County in northwestern Iowa...
  Woodbury County in west central Iowa...
  Southeastern Plymouth County in northwestern Iowa...
  Northwestern Ida County in west central Iowa...

* Until 600 PM CDT.

* At 511 PM CDT, a severe thunderstorm was located near Hornick, or
  26 miles southeast of Sioux City, moving northeast at 65 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.

* This severe thunderstorm will be near...
  Hornick and Smithland around 515 PM CDT.
  Anthon around 520 PM CDT.
  Correctionville and Pierson around 530 PM CDT.

Other locations in the path of this severe thunderstorm include
Kingsley, Washta and Quimby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4276 9608 4266 9544 4221 9589 4222 9629
      4222 9630
TIME...MOT...LOC 2211Z 211DEG 58KT 4219 9610 

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

$$

Meyers


Action: Continued
Issued At: 2026-05-18 17:19:28

313 
WWUS53 KFSD 182219
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
519 PM CDT Mon May 18 2026

IAC035-093-149-193-182300-
/O.CON.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Cherokee IA-Woodbury IA-Plymouth IA-Ida IA-
519 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHERN CHEROKEE...WOODBURY...SOUTHEASTERN PLYMOUTH AND
NORTHWESTERN IDA COUNTIES...

At 518 PM CDT, a severe thunderstorm was located near Smithland, or
24 miles southeast of Sioux City, moving northeast at 65 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe storm will be near...
  Correctionville and Anthon around 525 PM CDT.
  Pierson around 530 PM CDT.

Other locations in the path of this severe thunderstorm include
Washta, Cushing and Quimby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4276 9608 4266 9544 4221 9589 4222 9629
      4222 9630
TIME...MOT...LOC 2218Z 211DEG 57KT 4229 9601 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meyers


Action: Cancelled
Issued At: 2026-05-18 17:36:59

744 
WWUS53 KFSD 182236
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
536 PM CDT Mon May 18 2026

IAC149-182246-
/O.CAN.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Plymouth IA-
536 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PLYMOUTH COUNTY
IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2236Z 237DEG 40KT 4254 9568 

$$

IAC035-093-193-182300-
/O.CON.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Cherokee IA-Woodbury IA-Ida IA-
536 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHERN CHEROKEE...NORTHEASTERN WOODBURY AND NORTHWESTERN IDA
COUNTIES...

At 536 PM CDT, a severe thunderstorm was located near Washta, or 16
miles southwest of Cherokee, moving northeast at 45 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
  Quimby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2236Z 237DEG 40KT 4254 9568 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meyers


Action: Continued
Issued At: 2026-05-18 17:36:59

744 
WWUS53 KFSD 182236
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
536 PM CDT Mon May 18 2026

IAC149-182246-
/O.CAN.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Plymouth IA-
536 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PLYMOUTH COUNTY
IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2236Z 237DEG 40KT 4254 9568 

$$

IAC035-093-193-182300-
/O.CON.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Cherokee IA-Woodbury IA-Ida IA-
536 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHERN CHEROKEE...NORTHEASTERN WOODBURY AND NORTHWESTERN IDA
COUNTIES...

At 536 PM CDT, a severe thunderstorm was located near Washta, or 16
miles southwest of Cherokee, moving northeast at 45 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
  Quimby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2236Z 237DEG 40KT 4254 9568 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meyers


Action: Continued
Issued At: 2026-05-18 17:43:29

990 
WWUS53 KFSD 182243
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
543 PM CDT Mon May 18 2026

IAC035-093-193-182300-
/O.CON.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Cherokee IA-Woodbury IA-Ida IA-
543 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHERN CHEROKEE...NORTHEASTERN WOODBURY AND NORTHWESTERN IDA
COUNTIES...

At 542 PM CDT, a severe thunderstorm was located over Quimby, or 10
miles south of Cherokee, moving northeast at 50 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Public. At 523pm the public reported golf ball size hail 
         3 miles west/southwest of correctionville, Iowa!

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Correctionville, Quimby, Washta, and Cushing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2242Z 234DEG 42KT 4260 9561 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meyers


Action: Expired
Issued At: 2026-05-18 17:54:45

254 
WWUS53 KFSD 182254
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
554 PM CDT Mon May 18 2026

IAC035-093-193-182303-
/O.EXP.KFSD.SV.W.0052.000000T0000Z-260518T2300Z/
Cherokee IA-Woodbury IA-Ida IA-
554 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHEROKEE...
NORTHEASTERN WOODBURY AND NORTHWESTERN IDA COUNTIES WILL EXPIRE AT
600 PM CDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, small 
hail is still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Cherokee county until 630 pm!

&&

LAT...LON 4263 9587 4265 9586 4270 9566 4267 9548
      4266 9545 4260 9549 4239 9571 4239 9572
TIME...MOT...LOC 2253Z 211DEG 58KT 4274 9550 

$$

Meyers



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