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Home Return to list Severe Thunderstorm Warning 0267 Issued by the Bismarck Forecast Office
Action: New Issued At: 2026-08-11 20:07:28
812
WUUS53 KBIS 120107
SVRBIS
NDC037-059-085-120200-
/O.NEW.KBIS.SV.W.0267.260812T0107Z-260812T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
807 PM CDT Tue Aug 11 2026
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
East Central Grant County in south central North Dakota...
Southeastern Morton County in south central North Dakota...
Northeastern Sioux County in south central North Dakota...
* Until 900 PM CDT /800 PM MDT/.
* At 807 PM CDT /707 PM MDT/, a severe thunderstorm was located 7
miles northeast of Flasher, or 25 miles south of Mandan, 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...
Flasher, Solen, Cannon Ball, Prairie Knights Resort, Breien 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 4637 10130 4663 10121 4649 10059 4647 10059
4645 10060 4644 10060 4644 10059 4642 10058
4637 10055 4610 10079
TIME...MOT...LOC 0107Z 312DEG 24KT 4649 10109
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Anglin
Action: Continued Issued At: 2026-08-11 20:29:29
537
WWUS53 KBIS 120129
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
829 PM CDT Tue Aug 11 2026
NDC037-059-085-120200-
/O.CON.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Grant ND-Morton ND-Sioux ND-
829 PM CDT Tue Aug 11 2026 /729 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 9 PM CDT /8 PM
MDT/ FOR EAST CENTRAL GRANT, SOUTHEASTERN MORTON AND NORTHEASTERN
SIOUX COUNTIES...
At 829 PM CDT /729 PM MDT/, a severe thunderstorm was located 10
miles northeast of Shields, or 34 miles south of Bismarck, moving
southeast at 30 mph.
THIS IS A DESTRUCTIVE STORM FOR FAR SOUTHERN MORTON COUNTY AND
NORTHERN SIOUX COUNTY.
HAZARD...Baseball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured. Expect
shattered windows, extensive damage to roofs, siding, and
vehicles.
Locations impacted include...
Solen, Cannon Ball, Prairie Knights Resort, Breien and Standing
Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.
&&
LAT...LON 4637 10130 4658 10098 4649 10059 4647 10059
4645 10060 4644 10060 4642 10058 4638 10056
4637 10055 4610 10079
TIME...MOT...LOC 0107Z 322DEG 24KT 4646 10113
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Anglin
Action: Cancelled Issued At: 2026-08-11 20:49:59
023
WWUS53 KBIS 120149
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
849 PM CDT Tue Aug 11 2026
NDC037-059-120159-
/O.CAN.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Grant ND-Morton ND-
849 PM CDT Tue Aug 11 2026 /749 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL GRANT
AND SOUTHEASTERN MORTON COUNTIES...
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 /1200
AM MDT/ for a portion of south central North Dakota.
&&
LAT...LON 4637 10055 4610 10079 4627 10110 4628 10102
4630 10102 4630 10100 4631 10101 4632 10101
4633 10097 4635 10096 4635 10094 4638 10094
4641 10088 4639 10088 4640 10086 4639 10081
4640 10074 4638 10072 4641 10068 4643 10059
TIME...MOT...LOC 0129Z 323DEG 24KT 4634 10100
$$
NDC085-120200-
/O.CON.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Sioux ND-
849 PM CDT Tue Aug 11 2026 /749 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 9 PM CDT /8 PM
MDT/ FOR NORTHEASTERN SIOUX COUNTY...
At 849 PM CDT /749 PM MDT/, a severe thunderstorm was located 12
miles south of Solen, or 31 miles west of Linton, moving southeast at
30 mph.
THIS IS A DESTRUCTIVE STORM FOR NORTHERN SIOUX COUNTY.
HAZARD...Baseball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured. Expect
shattered windows, extensive damage to roofs, siding, and
vehicles.
Locations impacted include...
Solen, Cannon Ball, Prairie Knights Resort, Breien and Standing
Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.
&&
LAT...LON 4637 10055 4610 10079 4627 10110 4628 10102
4630 10102 4630 10100 4631 10101 4632 10101
4633 10097 4635 10096 4635 10094 4638 10094
4641 10088 4639 10088 4640 10086 4639 10081
4640 10074 4638 10072 4641 10068 4643 10059
TIME...MOT...LOC 0129Z 323DEG 24KT 4634 10100
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Anglin
Action: Continued Issued At: 2026-08-11 20:49:59
023
WWUS53 KBIS 120149
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
849 PM CDT Tue Aug 11 2026
NDC037-059-120159-
/O.CAN.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Grant ND-Morton ND-
849 PM CDT Tue Aug 11 2026 /749 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL GRANT
AND SOUTHEASTERN MORTON COUNTIES...
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 /1200
AM MDT/ for a portion of south central North Dakota.
&&
LAT...LON 4637 10055 4610 10079 4627 10110 4628 10102
4630 10102 4630 10100 4631 10101 4632 10101
4633 10097 4635 10096 4635 10094 4638 10094
4641 10088 4639 10088 4640 10086 4639 10081
4640 10074 4638 10072 4641 10068 4643 10059
TIME...MOT...LOC 0129Z 323DEG 24KT 4634 10100
$$
NDC085-120200-
/O.CON.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Sioux ND-
849 PM CDT Tue Aug 11 2026 /749 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 9 PM CDT /8 PM
MDT/ FOR NORTHEASTERN SIOUX COUNTY...
At 849 PM CDT /749 PM MDT/, a severe thunderstorm was located 12
miles south of Solen, or 31 miles west of Linton, moving southeast at
30 mph.
THIS IS A DESTRUCTIVE STORM FOR NORTHERN SIOUX COUNTY.
HAZARD...Baseball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured. Expect
shattered windows, extensive damage to roofs, siding, and
vehicles.
Locations impacted include...
Solen, Cannon Ball, Prairie Knights Resort, Breien and Standing
Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.
&&
LAT...LON 4637 10055 4610 10079 4627 10110 4628 10102
4630 10102 4630 10100 4631 10101 4632 10101
4633 10097 4635 10096 4635 10094 4638 10094
4641 10088 4639 10088 4640 10086 4639 10081
4640 10074 4638 10072 4641 10068 4643 10059
TIME...MOT...LOC 0129Z 323DEG 24KT 4634 10100
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Anglin
Action: Expired Issued At: 2026-08-11 20:56:30
129
WWUS53 KBIS 120156
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
856 PM CDT Tue Aug 11 2026
NDC085-120206-
/O.EXP.KBIS.SV.W.0267.000000T0000Z-260812T0200Z/
Sioux ND-
856 PM CDT Tue Aug 11 2026 /756 PM MDT Tue Aug 11 2026/
...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 9 PM CDT /8 PM MDT/ FOR
NORTHEASTERN SIOUX COUNTY...
The Severe Thunderstorm Warning that was previously in effect has
been reissued for Sioux County and is in effect until 945 PM CDT /845
PM MDT/. Please refer to that bulletin for the latest severe weather
information.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT /1200
AM MDT/ for a portion of south central North Dakota.
&&
LAT...LON 4637 10055 4610 10079 4627 10110 4628 10102
4630 10102 4630 10100 4631 10101 4632 10101
4633 10097 4635 10096 4635 10094 4638 10094
4641 10088 4639 10088 4640 10086 4639 10081
4640 10074 4638 10072 4641 10068 4643 10059
TIME...MOT...LOC 0149Z 323DEG 24KT 4623 10087
$$
Anglin
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