064 
WUUS53 KBIS 112247
SVRBIS
NDC011-112345-
/O.NEW.KBIS.SV.W.0257.260811T2247Z-260811T2345Z/

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

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Southwestern Bowman County in southwestern North Dakota...

* Until 545 PM MDT.

* At 447 PM MDT, a severe thunderstorm was located 8 miles west of
  Sunset Butte, or 21 miles southeast of Baker, 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...
  Mud Buttes and Sunset Butte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4622 10404 4625 10401 4625 10400 4606 10332
      4595 10352 4594 10404
TIME...MOT...LOC 2247Z 305DEG 24KT 4613 10399 

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

$$

Lynch

532 
WWUS53 KBIS 112302
SVSBIS

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

NDC011-112345-
/O.CON.KBIS.SV.W.0257.000000T0000Z-260811T2345Z/
Bowman ND-
502 PM MDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR SOUTHWESTERN BOWMAN COUNTY...

At 502 PM MDT, a severe thunderstorm was located near Mud Buttes, or
23 miles west of Bowman, 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...
Mud Buttes and Sunset Butte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4622 10404 4625 10401 4625 10400 4613 10356
      4595 10376 4594 10378 4604 10404
TIME...MOT...LOC 2302Z 305DEG 24KT 4607 10387 

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

$$

Lynch

734 
WWUS53 KBIS 112334
SVSBIS

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

NDC011-112345-
/O.CON.KBIS.SV.W.0257.000000T0000Z-260811T2345Z/
Bowman ND-
534 PM MDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR SOUTHWESTERN BOWMAN COUNTY...

At 533 PM MDT, a severe thunderstorm was located over Mud Buttes, or
19 miles southwest of Bowman, 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...
Mud Buttes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4610 10393 4615 10377 4608 10361 4595 10376
      4594 10378 4601 10395
TIME...MOT...LOC 2333Z 304DEG 20KT 4600 10372 

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

$$

Lynch