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Severe Thunderstorm Warning 0223
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-08-11 01:49:44 2026-08-11 01:49:00 2026-08-11 02:15:00
Cancelled 2026-08-11 02:01:14 2026-08-11 02:15:00
Continued 2026-08-11 02:01:14 2026-08-11 02:15:00
Expired 2026-08-11 02:12:14 2026-08-11 02:15:00


Action: New
Issued At: 2026-08-11 01:49:44

235 
WUUS53 KFSD 110649
SVRFSD
SDC125-135-110715-
/O.NEW.KFSD.SV.W.0223.260811T0649Z-260811T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
149 AM CDT Tue Aug 11 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Northeastern Yankton County in southeastern South Dakota...
  Southeastern Turner County in southeastern South Dakota...

* Until 215 AM CDT.

* At 149 AM CDT, a severe thunderstorm was located near Mayfield, or
  16 miles south of Parker, moving east at 40 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...
  Viborg around 155 AM CDT.
  Centerville around 200 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4315 9730 4318 9730 4324 9693 4310 9693
TIME...MOT...LOC 0649Z 263DEG 35KT 4317 9726 

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

$$

AP


Action: Cancelled
Issued At: 2026-08-11 02:01:14

578 
WWUS53 KFSD 110700
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
200 AM CDT Tue Aug 11 2026

SDC135-110710-
/O.CAN.KFSD.SV.W.0223.000000T0000Z-260811T0715Z/
Yankton SD-
200 AM CDT Tue Aug 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN YANKTON 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 4313 9717 4317 9717 4317 9724 4319 9724
      4324 9693 4310 9693
TIME...MOT...LOC 0700Z 265DEG 29KT 4318 9714 

$$

SDC125-110715-
/O.CON.KFSD.SV.W.0223.000000T0000Z-260811T0715Z/
Turner SD-
200 AM CDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHEASTERN TURNER COUNTY...

At 200 AM CDT, a severe thunderstorm was located near Viborg, or 15
miles south of Parker, 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.

This severe storm will be near...
  Centerville and Viborg around 205 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4313 9717 4317 9717 4317 9724 4319 9724
      4324 9693 4310 9693
TIME...MOT...LOC 0700Z 265DEG 29KT 4318 9714 

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

$$

AP


Action: Continued
Issued At: 2026-08-11 02:01:14

578 
WWUS53 KFSD 110700
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
200 AM CDT Tue Aug 11 2026

SDC135-110710-
/O.CAN.KFSD.SV.W.0223.000000T0000Z-260811T0715Z/
Yankton SD-
200 AM CDT Tue Aug 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN YANKTON 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 4313 9717 4317 9717 4317 9724 4319 9724
      4324 9693 4310 9693
TIME...MOT...LOC 0700Z 265DEG 29KT 4318 9714 

$$

SDC125-110715-
/O.CON.KFSD.SV.W.0223.000000T0000Z-260811T0715Z/
Turner SD-
200 AM CDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHEASTERN TURNER COUNTY...

At 200 AM CDT, a severe thunderstorm was located near Viborg, or 15
miles south of Parker, 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.

This severe storm will be near...
  Centerville and Viborg around 205 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4313 9717 4317 9717 4317 9724 4319 9724
      4324 9693 4310 9693
TIME...MOT...LOC 0700Z 265DEG 29KT 4318 9714 

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

$$

AP


Action: Expired
Issued At: 2026-08-11 02:12:14

886 
WWUS53 KFSD 110711
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
211 AM CDT Tue Aug 11 2026

SDC125-110721-
/O.EXP.KFSD.SV.W.0223.000000T0000Z-260811T0715Z/
Turner SD-
211 AM CDT Tue Aug 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TURNER COUNTY
WILL EXPIRE AT 215 AM CDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 4313 9717 4317 9717 4317 9724 4319 9724
      4324 9693 4310 9693
TIME...MOT...LOC 0711Z 263DEG 35KT 4319 9701 

$$

AP



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