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Severe Thunderstorm Warning 0211
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-08-07 05:02:06 2026-08-07 05:01:00 2026-08-07 05:45:00
Continued 2026-08-07 05:18:36 2026-08-07 05:45:00
Cancelled 2026-08-07 05:27:36 2026-08-07 05:45:00
Continued 2026-08-07 05:27:36 2026-08-07 05:45:00
Expired 2026-08-07 05:44:07 2026-08-07 05:45:00


Action: New
Issued At: 2026-08-07 05:02:06

147 
WUUS53 KFSD 071001
SVRFSD
SDC077-079-097-071045-
/O.NEW.KFSD.SV.W.0211.260807T1001Z-260807T1045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
501 AM CDT Fri Aug 7 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Southeastern Kingsbury County in east central South Dakota...
  Northwestern Lake County in east central South Dakota...
  Northeastern Miner County in east central South Dakota...

* Until 545 AM CDT.

* At 501 AM CDT, a severe thunderstorm was located near Lake Thompson
  State Recreation Area, moving southeast at 25 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...
  Oldham around 505 AM CDT.
  Ramona around 515 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4420 9757 4433 9754 4431 9713 4397 9713
TIME...MOT...LOC 1001Z 299DEG 22KT 4424 9745 

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

$$

JH


Action: Continued
Issued At: 2026-08-07 05:18:36

718 
WWUS53 KFSD 071018
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
518 AM CDT Fri Aug 7 2026

SDC077-079-097-071045-
/O.CON.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Kingsbury SD-Lake SD-Miner SD-
518 AM CDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR SOUTHEASTERN KINGSBURY...NORTHWESTERN LAKE AND NORTHEASTERN MINER
COUNTIES...

At 518 AM CDT, a severe thunderstorm was located near Ramona, or 13
miles northwest of Lake Herman State Park, moving southeast at 25
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.

Locations impacted include...
  Ramona, Madison and Lake Herman State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4414 9745 4428 9736 4431 9713 4397 9713
TIME...MOT...LOC 1018Z 304DEG 23KT 4413 9734 

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

$$

JH


Action: Cancelled
Issued At: 2026-08-07 05:27:36

814 
WWUS53 KFSD 071027
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
527 AM CDT Fri Aug 7 2026

SDC097-071037-
/O.CAN.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Miner SD-
527 AM CDT Fri Aug 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MINER 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 4410 9737 4428 9729 4431 9713 4397 9713
TIME...MOT...LOC 1027Z 300DEG 26KT 4407 9722 

$$

SDC077-079-071045-
/O.CON.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Kingsbury SD-Lake SD-
527 AM CDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR SOUTHEASTERN KINGSBURY AND NORTHWESTERN LAKE COUNTIES...

At 527 AM CDT, a severe thunderstorm was located near Ramona, or near
Lake Herman State Park, moving southeast at 30 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...
Madison, Lake Herman State Park, Ramona, and Oldham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4410 9737 4428 9729 4431 9713 4397 9713
TIME...MOT...LOC 1027Z 300DEG 26KT 4407 9722 

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

$$

JH


Action: Continued
Issued At: 2026-08-07 05:27:36

814 
WWUS53 KFSD 071027
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
527 AM CDT Fri Aug 7 2026

SDC097-071037-
/O.CAN.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Miner SD-
527 AM CDT Fri Aug 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MINER 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 4410 9737 4428 9729 4431 9713 4397 9713
TIME...MOT...LOC 1027Z 300DEG 26KT 4407 9722 

$$

SDC077-079-071045-
/O.CON.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Kingsbury SD-Lake SD-
527 AM CDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR SOUTHEASTERN KINGSBURY AND NORTHWESTERN LAKE COUNTIES...

At 527 AM CDT, a severe thunderstorm was located near Ramona, or near
Lake Herman State Park, moving southeast at 30 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...
Madison, Lake Herman State Park, Ramona, and Oldham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4410 9737 4428 9729 4431 9713 4397 9713
TIME...MOT...LOC 1027Z 300DEG 26KT 4407 9722 

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

$$

JH


Action: Expired
Issued At: 2026-08-07 05:44:07

341 
WWUS53 KFSD 071043
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
543 AM CDT Fri Aug 7 2026

SDC077-079-071053-
/O.EXP.KFSD.SV.W.0211.000000T0000Z-260807T1045Z/
Kingsbury SD-Lake SD-
543 AM CDT Fri Aug 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KINGSBURY AND
NORTHWESTERN LAKE COUNTIES WILL EXPIRE AT 545 AM CDT...

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

&&

LAT...LON 4410 9737 4428 9729 4431 9713 4397 9713
TIME...MOT...LOC 1043Z 299DEG 22KT 4403 9712 

$$

JH



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