Alert archive / North Dakota / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 16, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jun 6, 2026, 11:29 PM CDT for Divide County, Williams County, North Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 6, 2026, 11:29 PM CDT (04:29 UTC)
- Expired
- Jun 7, 2026, 12:15 AM CDT
- In force
- 46 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Divide County, ND, Williams County, ND
The radar
The Minot AFB radar (KMBX), 194 km from the middle of the area, began a volume at 04:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 6, 7:37 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 4.5 hours before the alert went out and 290 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 690 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 2573 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 10:00 PM CDT, 1 hour 29 minutes earlier.
Area forecast discussion, Jun 6, 10:00 PM CDT, 1 hour 29 minutes before
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</html>Hazardous weather outlook, Jun 6, 9:42 PM CDT, 1 hour 47 minutes before
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Local storm report, Jun 6, 9:13 PM CDT, 2 hours 16 minutes before
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</html>Special weather statement, Jun 6, 9:36 PM CDT, 1 hour 53 minutes before
Special Weather Statement National Weather Service Bismarck ND 936 PM CDT Sat Jun 6 2026 NDZ001-009-017-070345- Divide-Williams-McKenzie- Including the cities of Crosby, Williston, and Watford City 936 PM CDT Sat Jun 6 2026 /836 PM MDT Sat Jun 6 2026/ ...STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO MOVE INTO NORTHWEST NORTH DAKOTA LATE THIS EVENING... Thunderstorms have rapidly developed in northeast Montana, and are moving northeast at 50 mph. They are expected to cross the North Dakota and Montana state line around 1030 PM CDT. The storms are expected to then continue across northwest North Dakota, and some of them will be severe. The main threat will be damaging winds up to around 70 mph, but large hail up to ping pong ball size is also possible. A Severe Thunderstorm Watch is in effect for the area until 3 AM CDT. Prepare now for the possibility of severe thunderstorms in the next few hours if you are in northwest North Dakota. CJS
Special weather statement, Jun 6, 10:03 PM CDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Bismarck ND
1003 PM CDT Sat Jun 6 2026
NDZ031-040-043-070345-
Slope ND-Bowman ND-Golden Valley ND-
903 PM MDT Sat Jun 6 2026
...A STRONG THUNDERSTORM WILL IMPACT WESTERN BOWMAN...SOUTHWESTERN
GOLDEN VALLEY AND SOUTHWESTERN SLOPE COUNTIES UNTIL 945 PM MDT...
At 903 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles south of Marmarth, or 31 miles west of Bowman, moving northeast
at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Rhame, Marmarth, Mud Buttes, Griffin, Sunset Butte and Pretty
Butte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 4628 10405 4661 10405 4650 10362 4629 10337
4595 10384 4595 10405
TIME...MOT...LOC 0303Z 217DEG 28KT 4610 10403
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 TO 55 MPH
JohnsonLocal storm report, Jun 6, 10:14 PM CDT, 1 hour 15 minutes before
Preliminary Local Storm Report
National Weather Service Bismarck ND
1014 PM CDT Sat Jun 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0835 PM Hail Ambrose 48.96N 103.48W
06/06/2026 M1.50 Inch Divide ND Public
&&Special weather statement, Jun 6, 10:45 PM CDT, 44 minutes before
Special Weather Statement
National Weather Service Bismarck ND
1045 PM CDT Sat Jun 6 2026
NDZ040-043-070430-
Bowman ND-Slope ND-
945 PM MDT Sat Jun 6 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN BOWMAN AND
SOUTHWESTERN SLOPE COUNTIES UNTIL 1030 PM MDT...
At 945 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Marmarth, or 31 miles west of Bowman, moving
northeast at 25 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Rhame, Marmarth, Griffin, Sunset Butte and Pretty Butte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4628 10405 4653 10405 4654 10404 4650 10362
4629 10336 4600 10403 4602 10405
TIME...MOT...LOC 0345Z 226DEG 19KT 4619 10404
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
CJSThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 8:15 PM CDT | Severe Thunderstorm Warning | BIS | Divide | 46 min |
| Jun 6, 10:03 PM CDT | Special Weather Statement | BIS | Bowman | 42 min |
| Jun 6, 10:35 PM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 55 min |
| Jun 6, 10:45 PM CDT | Special Weather Statement | BIS | Bowman | 45 min |
| Jun 7, 12:02 AM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 58 min |
| Jun 7, 12:35 AM CDT | Special Weather Statement | BIS | Billings, Stark | 40 min |
| Jun 7, 1:17 AM CDT | Wind Advisory | BIS | Bottineau, Burleigh, Dickey, Emmons, Foster, Grant and 14 more | 19 hr |
| Jun 7, 1:57 AM CDT | Special Weather Statement | BIS | McKenzie | 33 min |
| Jun 7, 2:05 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 55 min |
| Jun 7, 2:58 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Mountrail | 62 min |
| Jun 7, 3:03 AM CDT | Special Weather Statement | BIS | Williams | 27 min |
| Jun 7, 4:00 AM CDT | Special Weather Statement | BIS | Ward | 30 min |
| Jun 7, 4:05 AM CDT | Special Weather Statement | BIS | Williams | 25 min |
| Jun 7, 4:11 AM CDT | Special Weather Statement | BIS | Bottineau | 34 min |
| Jun 7, 4:26 AM CDT | Special Weather Statement | BIS | Renville | 34 min |
| Jun 7, 5:14 AM CDT | Special Weather Statement | BIS | Bottineau | 16 min |
| Jun 7, 5:46 PM CDT | Severe Thunderstorm Warning | BIS | Golden Valley | 74 min |
| Jun 7, 5:50 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 55 min |
| Jun 7, 6:23 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 67 min |
| Jun 7, 6:28 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 47 min |
| Jun 7, 6:35 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, Williams | 55 min |
| Jun 7, 6:35 PM CDT | Severe Thunderstorm Warning | BIS | Golden Valley | 55 min |
| Jun 7, 6:37 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, McKenzie | 53 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.