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Severe Thunderstorm Warning 0046
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-05-17 18:33:33 2026-05-17 18:33:00 2026-05-17 19:30:00
Continued 2026-05-17 18:52:04 2026-05-17 19:30:00
Expired 2026-05-17 19:33:35 2026-05-17 19:30:00


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

507 
WUUS53 KFSD 172333
SVRFSD
IAC149-167-180030-
/O.NEW.KFSD.SV.W.0046.260517T2333Z-260518T0030Z/

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

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  South central Sioux County in northwestern Iowa...
  Northwestern Plymouth County in northwestern Iowa...

* Until 730 PM CDT.

* At 633 PM CDT, a severe thunderstorm was located near Akron, or 13
  miles south of Hawarden, moving northeast at 20 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 thunderstorm will be near...
  Craig around 640 PM CDT.

Other locations in the path of this severe thunderstorm include
Ireton, Struble, Le Mars and Maurice.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southeastern South Dakota.

&&

LAT...LON 4269 9651 4281 9659 4284 9658 4284 9655
      4288 9655 4304 9622 4276 9607
TIME...MOT...LOC 2333Z 244DEG 19KT 4280 9650 

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

$$

BP


Action: Continued
Issued At: 2026-05-17 18:52:04

044 
WWUS53 KFSD 172351
SVSFSD

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

IAC149-167-180030-
/O.CON.KFSD.SV.W.0046.000000T0000Z-260518T0030Z/
Sioux IA-Plymouth IA-
651 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTH CENTRAL SIOUX AND NORTH CENTRAL PLYMOUTH COUNTIES...

At 651 PM CDT, a severe thunderstorm was located over Craig, or 9
miles northwest of Le Mars, moving northeast at 30 mph.

HAZARD...Two inch 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...
  Ireton, Maurice and Struble.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4278 9639 4287 9640 4293 9640 4304 9622
      4281 9610
TIME...MOT...LOC 2351Z 241DEG 25KT 4289 9627 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BP


Action: Expired
Issued At: 2026-05-17 19:33:35

432 
WWUS53 KFSD 180033
SVSFSD

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

IAC149-167-180043-
/O.EXP.KFSD.SV.W.0046.000000T0000Z-260518T0030Z/
Sioux IA-Plymouth IA-
733 PM CDT Sun May 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SIOUX AND NORTH
CENTRAL PLYMOUTH COUNTIES HAS EXPIRED...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sioux Falls.

&&

LAT...LON 4278 9639 4287 9640 4293 9640 4304 9622
      4281 9610
TIME...MOT...LOC 0033Z 244DEG 19KT 4299 9600 

$$

BP



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