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Severe Thunderstorm Warning 0255
Issued by the Bismarck Forecast Office

Action Issued Starts Expiration
New 2026-08-11 17:34:25 2026-08-11 17:34:00 2026-08-11 18:30:00
Continued 2026-08-11 17:59:26 2026-08-11 18:30:00
Cancelled 2026-08-11 18:13:26 2026-08-11 18:30:00


Action: New
Issued At: 2026-08-11 17:34:25

593 
WUUS53 KBIS 112234
SVRBIS
NDC021-112330-
/O.NEW.KBIS.SV.W.0255.260811T2234Z-260811T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
Issued by National Weather Service Grand Forks ND
534 PM CDT Tue Aug 11 2026

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Southwestern Dickey County in southeastern North Dakota...

* Until 630 PM CDT.

* At 533 PM CDT, a severe thunderstorm was located 8 miles southwest
  of Merricourt City, or 17 miles west of Ellendale, moving southeast
  at 25 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...
  Ellendale, Forbes, Merricourt City, and Merricourt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4598 9901 4619 9900 4622 9873 4594 9839
      4594 9899
TIME...MOT...LOC 2233Z 326DEG 24KT 4610 9886 

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

$$

CJ


Action: Continued
Issued At: 2026-08-11 17:59:26

415 
WWUS53 KBIS 112259
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
Issued by National Weather Service Grand Forks ND
559 PM CDT Tue Aug 11 2026

NDC021-112330-
/O.CON.KBIS.SV.W.0255.000000T0000Z-260811T2330Z/
Dickey ND-
559 PM CDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHWESTERN DICKEY COUNTY...

At 558 PM CDT, a severe thunderstorm was located near Forbes, or 10
miles west of Ellendale, 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...
Ellendale and Forbes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4598 9901 4610 9858 4594 9839 4594 9899
      4597 9901
TIME...MOT...LOC 2258Z 326DEG 24KT 4596 9872 

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

$$

CJ


Action: Cancelled
Issued At: 2026-08-11 18:13:26

002 
WWUS53 KBIS 112313
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
Issued by National Weather Service Grand Forks ND
613 PM CDT Tue Aug 11 2026

NDC021-112322-
/O.CAN.KBIS.SV.W.0255.000000T0000Z-260811T2330Z/
Dickey ND-
613 PM CDT Tue Aug 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DICKEY COUNTY IS
CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However, small hail is still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
southeastern North Dakota.

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

&&

LAT...LON 4598 9901 4610 9858 4594 9839 4594 9899
      4597 9901
TIME...MOT...LOC 2310Z 326DEG 24KT 4588 9864 

$$

CJ



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