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Severe Thunderstorm Warning 0269
Issued by the Bismarck Forecast Office

Action Issued Starts Expiration
New 2026-08-11 20:46:29 2026-08-11 20:46:00 2026-08-11 21:45:00
Continued 2026-08-11 21:11:00 2026-08-11 21:45:00
Continued 2026-08-11 21:27:01 2026-08-11 21:45:00
Continued 2026-08-11 21:33:31 2026-08-11 21:45:00
Cancelled 2026-08-11 21:33:31 2026-08-11 21:45:00
Expired 2026-08-11 21:42:01 2026-08-11 21:45:00


Action: New
Issued At: 2026-08-11 20:46:29

000 
WUUS53 KBIS 120146
SVRBIS
NDC029-085-120245-
/O.NEW.KBIS.SV.W.0269.260812T0146Z-260812T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
846 PM CDT Tue Aug 11 2026

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Southwestern Emmons County in south central North Dakota...
  Eastern Sioux County in south central North Dakota...

* Until 945 PM CDT /845 PM MDT/.

* At 846 PM CDT /746 PM MDT/, a severe thunderstorm was located 13
  miles north of Selfridge, or 33 miles west of Linton, moving
  southeast at 30 mph.

  THIS IS A DESTRUCTIVE STORM FOR NORTHERN SIOUX COUNTY.

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

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be severely injured.
           Expect shattered windows, extensive damage to roofs,
           siding, and vehicles.

* Locations impacted include...
  Fort Yates, Selfridge, Cattail Recreation Area and Standing Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.

&&

LAT...LON 4621 10111 4636 10081 4595 10028 4594 10030
      4594 10100
TIME...MOT...LOC 0145Z 323DEG 24KT 4623 10092

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Anglin


Action: Continued
Issued At: 2026-08-11 21:11:00

628 
WWUS53 KBIS 120210
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
910 PM CDT Tue Aug 11 2026

NDC029-085-120245-
/O.CON.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Emmons ND-Sioux ND-
910 PM CDT Tue Aug 11 2026 /810 PM MDT Tue Aug 11 2026/

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
/845 PM MDT/ FOR SOUTHWESTERN EMMONS AND EASTERN SIOUX COUNTIES...

At 910 PM CDT /810 PM MDT/, a severe thunderstorm was located 7 miles
west of Fort Yates, or 29 miles southwest of Linton, moving southeast
at 30 mph.

HAZARD...Tennis 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...
  Fort Yates, Selfridge, Cattail Recreation Area and Standing Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.

&&

LAT...LON 4621 10111 4636 10081 4595 10028 4594 10030
      4594 10100
TIME...MOT...LOC 0146Z 323DEG 24KT 4622 10092

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Anglin


Action: Continued
Issued At: 2026-08-11 21:27:01

989 
WWUS53 KBIS 120226
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
926 PM CDT Tue Aug 11 2026

NDC029-085-120245-
/O.CON.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Emmons ND-Sioux ND-
926 PM CDT Tue Aug 11 2026 /826 PM MDT Tue Aug 11 2026/

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
/845 PM MDT/ FOR SOUTHWESTERN EMMONS AND SOUTHEASTERN SIOUX
COUNTIES...

At 926 PM CDT /826 PM MDT/, a severe thunderstorm was located 6 miles
southwest of Fort Yates, or 28 miles southwest of Linton, moving
southeast 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...
  Fort Yates, Selfridge, Cattail Recreation Area and Standing Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.

&&

LAT...LON 4616 10109 4631 10074 4595 10028 4594 10029
      4594 10100
TIME...MOT...LOC 0210Z 323DEG 24KT 4609 10078

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

$$

Anglin


Action: Continued
Issued At: 2026-08-11 21:33:31

252 
WWUS53 KBIS 120233
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
933 PM CDT Tue Aug 11 2026

NDC029-120243-
/O.CAN.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Emmons ND-
933 PM CDT Tue Aug 11 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHWESTERN EMMONS
COUNTY...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for a
portion of south central North Dakota.

&&

LAT...LON 4605 10105 4618 10065 4615 10063 4613 10063
      4611 10061 4608 10062 4606 10061 4601 10056
      4600 10053 4596 10051 4594 10051 4594 10100
TIME...MOT...LOC 0226Z 323DEG 24KT 4601 10069

$$


NDC085-120245-
/O.CON.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Sioux ND-
933 PM CDT Tue Aug 11 2026 /833 PM MDT Tue Aug 11 2026/

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
/845 PM MDT/ FOR SOUTHEASTERN SIOUX COUNTY...

At 933 PM CDT /833 PM MDT/, a severe thunderstorm was located 8 miles
south of Fort Yates, or 28 miles southwest of Linton, moving
southeast at 30 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...
  Fort Yates, Selfridge and Standing Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.

&&

LAT...LON 4605 10105 4618 10065 4615 10063 4613 10063
      4611 10061 4608 10062 4606 10061 4601 10056
      4600 10053 4596 10051 4594 10051 4594 10100
TIME...MOT...LOC 0226Z 323DEG 24KT 4601 10069

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

$$

Anglin


Action: Cancelled
Issued At: 2026-08-11 21:33:31

252 
WWUS53 KBIS 120233
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
933 PM CDT Tue Aug 11 2026

NDC029-120243-
/O.CAN.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Emmons ND-
933 PM CDT Tue Aug 11 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHWESTERN EMMONS
COUNTY...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for a
portion of south central North Dakota.

&&

LAT...LON 4605 10105 4618 10065 4615 10063 4613 10063
      4611 10061 4608 10062 4606 10061 4601 10056
      4600 10053 4596 10051 4594 10051 4594 10100
TIME...MOT...LOC 0226Z 323DEG 24KT 4601 10069

$$


NDC085-120245-
/O.CON.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Sioux ND-
933 PM CDT Tue Aug 11 2026 /833 PM MDT Tue Aug 11 2026/

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
/845 PM MDT/ FOR SOUTHEASTERN SIOUX COUNTY...

At 933 PM CDT /833 PM MDT/, a severe thunderstorm was located 8 miles
south of Fort Yates, or 28 miles southwest of Linton, moving
southeast at 30 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...
  Fort Yates, Selfridge and Standing Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.

&&

LAT...LON 4605 10105 4618 10065 4615 10063 4613 10063
      4611 10061 4608 10062 4606 10061 4601 10056
      4600 10053 4596 10051 4594 10051 4594 10100
TIME...MOT...LOC 0226Z 323DEG 24KT 4601 10069

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

$$

Anglin


Action: Expired
Issued At: 2026-08-11 21:42:01

349 
WWUS53 KBIS 120241
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
941 PM CDT Tue Aug 11 2026

NDC085-120251-
/O.EXP.KBIS.SV.W.0269.000000T0000Z-260812T0245Z/
Sioux ND-
941 PM CDT Tue Aug 11 2026 /841 PM MDT Tue Aug 11 2026/

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 945 PM CDT /845 PM MDT/
FOR SOUTHEASTERN SIOUX COUNTY...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However, small hail and heavy rain are still
possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT /1200
AM MDT/ for a portion of south central North Dakota.

&&

LAT...LON 4605 10105 4618 10065 4615 10063 4613 10063
      4611 10061 4608 10062 4606 10061 4601 10056
      4600 10053 4596 10051 4594 10051 4594 10100
TIME...MOT...LOC 0233Z 323DEG 24KT 4597 10065

$$

Anglin



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