Alert archive / North Dakota / Flash Flood Warnings in 2026

Flash Flood Warning 1, NWS Bismarck, ND

June 29, 2026Bottineau County, North Dakota

NWS Bismarck, ND issued this flash flood warning at Jun 29, 2026, 5:28 PM CDT for Bottineau County, North Dakota. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 29, 2026, 5:28 PM CDT (22:28 UTC)
Expired: Jun 29, 2026, 9:00 PM CDT
In force: 4 hr
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Flood severity: None

County Bottineau County, ND

The radar

The Minot AFB radar (KMBX), 50 km from the middle of the area, began a volume at 22:31 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The text

As transmitted.

701 
WGUS53 KBIS 292228
FFWBIS
NDC009-300200-
/O.NEW.KBIS.FF.W.0001.260629T2228Z-260630T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Bismarck ND
528 PM CDT Mon Jun 29 2026

The National Weather Service in Bismarck has issued a

* Flash Flood Warning for...
  Northeastern Bottineau County in north central North Dakota...

* Until 900 PM CDT.

* At 528 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 2 and 3 inches of rain
  have fallen. Additional rainfall amounts of 1 to 2 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Bottineau, Souris, Landa, Kramer, Gardena, Carbury and Roth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4900 10038 4884 10040 4867 10050 4865 10071
      4867 10076 4873 10079 4879 10084 4884 10087
      4892 10094 4900 10090

FLASH FLOOD...RADAR INDICATED

$$

Anglin

2 follow-up statements

130 
WGUS73 KBIS 292354
FFSBIS

Flash Flood Statement
National Weather Service Bismarck ND
654 PM CDT Mon Jun 29 2026

NDC009-300200-
/O.CON.KBIS.FF.W.0001.000000T0000Z-260630T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bottineau ND-
654 PM CDT Mon Jun 29 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR NORTHEASTERN BOTTINEAU COUNTY...

At 654 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Bottineau, Souris, Landa, Kramer, Gardena, Carbury and Roth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4900 10038 4884 10040 4867 10050 4865 10071
      4867 10076 4873 10079 4879 10084 4884 10087
      4892 10094 4900 10090

FLASH FLOOD...RADAR INDICATED

$$

Adam

982 
WGUS73 KBIS 300151
FFSBIS

Flash Flood Statement
National Weather Service Bismarck ND
851 PM CDT Mon Jun 29 2026

NDC009-300201-
/O.EXP.KBIS.FF.W.0001.000000T0000Z-260630T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bottineau ND-
851 PM CDT Mon Jun 29 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 9 PM CDT THIS EVENING FOR
NORTHEASTERN BOTTINEAU COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

&&

LAT...LON 4900 10038 4884 10040 4867 10050 4865 10071
      4867 10076 4873 10079 4879 10084 4884 10087
      4892 10094 4900 10090

$$

Adam

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 29, 1:07 PM CDT, 4 hours 21 minutes earlier. Its key messages:

Isolated to scattered severe thunderstorms are possible this afternoon and evening, especially in central to eastern portions of the state. Main hazards will be hail up to 2 inches in diameter and wind gusts up to 70 mph, with an isolated tornado threat.
A gradual warming trend is expected through Friday with above average highs favored. A cooling trend back to near average highs is then favored for the holiday weekend.
Scattered showers and thunderstorms are possible as early as Thursday lasting through the holiday weekend.

Area forecast discussion, Jun 29, 1:07 PM CDT, 4 hours 21 minutes before

Area Forecast Discussion
National Weather Service Bismarck ND
107 PM CDT Mon Jun 29 2026

.KEY MESSAGES...

- Isolated to scattered severe thunderstorms are possible this
  afternoon and evening, especially in central to eastern
  portions of the state. Main hazards will be hail up to 2
  inches in diameter and wind gusts up to 70 mph, with an
  isolated tornado threat.

- A gradual warming trend is expected through Friday with above
  average highs favored. A cooling trend back to near average
  highs is then favored for the holiday weekend.

- Scattered showers and thunderstorms are possible as early as
  Thursday lasting through the holiday weekend.

&&

.DISCUSSION...
Issued at 104 PM CDT Mon Jun 29 2026

An impressive upper level trough sat over Montana and Wyoming
early this afternoon with a jet rounding the base into the
northern high plains. A surface low is centered over the central
to eastern Dakotas, which will lift northeast as the upper jet
continues to eject out over the plains through the evening. A
lower level moisture gradient is a highlight of today's setup
with 17Z surface dew points sitting at around 70 degrees in the
warm sector, mainly near and east of a line that cuts north-
south through the state (roughly going through Bismarck and just
east of Minot). West of this line low level moisture is notably
lower with a few non-severe thunderstorms rolling through this
morning.

Scattered convection is expected to redevelop this afternoon under
the influence of the ejecting upper jet/trough. This incoming jet
aloft will provide strong shear in the 50-60kt range with the wwarm
sector's rich moisture bringing a conditional opportinity for
adequate instability for severe weather. Early morning convection
made the instability potential somewhat uncertain, though satellite
trends at 17Z show pockets of clearing which should allow for an
increasing trend in surface based instability. Supercells with the
threat of very large hail and damaging wind gusts will be the
primary threat, at least initially until some clustering and upscale
growth likely occurs. A tornado threat will also accompany
thunderstorms, especially towards the eastern portions of the state.
The intensity of the overall wind shear cannot be understated and
will allow for any storm that can tap into richer low level moisture
to produce hail exceeding 2 inches in diameter or wind gusts
exceeding 70 mph. As mentioned before the coverage may partially
depend on how well earlier stratus can clear, with lingering clouds
preventing full destabilization.

Several rounds of severe convection will be possible as the upper
level trough swings through late this evening. The thunderstorm
threat will likely linger longest across the far north before
exiting around or just after midnight.

On Tuesday the upper low will be well over the southern Canadian
plains with drier westerly flow across North Dakota. Windy west
winds of 20-30 mph with gusts up to 45 mph will be common with highs
from the mid 70s northwest to mid 80s far southeast.

Flow on Wednesday remains westerly, though less windy than Tuesday.
There is rising confidence among deterministic and machine learning
guidance in convection and severe weather potential returning as
early as Thursday, though where the strongest storms set up in the
state is still dependant on uncertain moisture return.

&&

.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 1242 PM CDT Mon Jun 29 2026

Scattered showers and thunderstorms are expected today through
the evening, with severe thunderstorms possible across central
and eastern North Dakota. Thunderstorm threat should taper off
from south to north through the evening. IFR stratus should
gradually lift somewhat at KJMS through the afternoon but this
may be a slow process. Otherwise, IFR ceilings/visibility and
erratic winds possible with any thunderstorm, with severe
weather possible near and east of a KMOT-KBIS line. Surface
winds turn west/southwest through the evening then increase
after 09Z.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
None.

&&

DISCUSSION...Edwards
AVIATION...Edwards

Hazardous weather outlook, Jun 29, 1:13 PM CDT, 4 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
113 PM CDT Mon Jun 29 2026

NDZ003>005-012-013-019-020-022-023-025-033-035>037-041-042-044-
046>048-050-051-056>062-301815-
Renville-Bottineau-Rolette-McHenry-Pierce-Mercer-Oliver-Sheridan-
Wells-Foster-Stark-Burleigh-Kidder-Stutsman-Hettinger-Grant-Adams-
Emmons-Logan-La Moure-McIntosh-Dickey-
Central and Southern Ward/Minot Area-Western McLean-
Eastern McLean-Western Morton-Eastern Morton-Western Sioux-
Eastern Sioux-
113 PM CDT Mon Jun 29 2026 /1213 PM MDT Mon Jun 29 2026/

This Hazardous Weather Outlook is for portions of north central
North Dakota, south central North Dakota, southeast North Dakota,
and southwest North Dakota.

.DAY ONE...This Afternoon and Tonight

Isolated to scattered severe thunderstorms are possible this
afternoon and evening. Main hazards will be hail up to 2 inches
in diameter and wind gusts up to 70 mph, along with an isolated
tornado threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to provide reports to the NWS using standard
procedures, including through our social media accounts.

NDZ001-002-009-010-017-018-031-032-040-043-055-301815-
Divide-Burke-Williams-Mountrail-McKenzie-Dunn-Golden Valley-
Billings-Slope-Bowman-Northwest Ward-
113 PM CDT Mon Jun 29 2026 /1213 PM MDT Mon Jun 29 2026/

This Hazardous Weather Outlook is for portions of north central
North Dakota, northwest North Dakota, and southwest North Dakota.

.DAY ONE...This Afternoon and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to provide reports to the NWS using standard
procedures, including through our social media accounts.

In the hours before

Local storm report, Jun 29, 4:58 PM CDT, 30 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
458 PM CDT Mon Jun 29 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0452 PM     Tstm Wnd Gst     8 SSW Sawyer            47.98N 101.09W
06/29/2026  M59 MPH          Ward               ND   Mesonet

            59 MPH winds at 10M measured at Sawyer 7S
            NDAWN.

&&

CSD

Local storm report, Jun 29, 5:00 PM CDT, 28 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
500 PM CDT Mon Jun 29 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0410 PM     Tstm Wnd Gst     1 W Garrison            47.65N 101.43W
06/29/2026  M62 MPH          McLean             ND   ASOS

            ASOS station KN60 Garrison.

&&

MEJ

Special weather statement, Jun 29, 5:00 PM CDT, 28 minutes before

Special Weather Statement
National Weather Service Bismarck ND
500 PM CDT Mon Jun 29 2026

NDZ044-292230-
Adams ND-
400 PM MDT Mon Jun 29 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL ADAMS COUNTY UNTIL 430
PM MDT...

At 400 PM MDT, Doppler radar was tracking a strong thunderstorm over
Hettinger, 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...
  Hettinger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4595 10282 4628 10268 4628 10250 4621 10250
      4621 10232 4619 10229 4595 10252
TIME...MOT...LOC 2159Z 208DEG 19KT 4604 10262

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

CJS

Local storm report, Jun 29, 5:09 PM CDT, 19 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
509 PM CDT Mon Jun 29 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     Tstm Wnd Gst     2 S Max                 47.80N 101.30W
06/29/2026  M77 MPH          McLean             ND   Mesonet

            Measured wind gust at US Air Force weather
            station.

&&

MEJ

Local storm report, Jun 29, 5:10 PM CDT, 18 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
510 PM CDT Mon Jun 29 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0504 PM     Hail             Hettinger               46.00N 102.64W
06/29/2026  M1.00 Inch       Adams              ND   Emergency Mngr

            At 4:04 MDT, emergency management reported
            quarter sized hail in the city of Hettinger.
            Still hailing at the time of report. Also
            reports rain, but no wind.

&&

JGA

Special weather statement, Jun 29, 5:17 PM CDT, 11 minutes before

Special Weather Statement
National Weather Service Bismarck ND
517 PM CDT Mon Jun 29 2026

NDZ031-040-292245-
Slope ND-Golden Valley ND-
417 PM MDT Mon Jun 29 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN GOLDEN VALLEY AND
WESTERN SLOPE COUNTIES UNTIL 445 PM MDT...

At 417 PM MDT, Doppler radar was tracking a strong thunderstorm 17
miles northwest of Marmarth, or 31 miles south of Beach, moving east
at 20 mph.

HAZARD...Wind gusts up to 50 mph and penny 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...
  Marmarth, Three V Crossing, Pretty Butte and Alpha.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4666 10405 4669 10374 4628 10367 4628 10405
TIME...MOT...LOC 2217Z 258DEG 17KT 4648 10417

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

CJS

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 7:21 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Morton	54 min
Jun 28, 7:35 PM CDT	Severe Thunderstorm Warning	BIS	Morton, Oliver	39 min
Jun 28, 8:13 PM CDT	Special Weather Statement	BIS	McLean, Mercer	32 min
Jun 28, 8:30 PM CDT	Severe Thunderstorm Warning	BIS	Mercer	60 min
Jun 28, 8:36 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	54 min
Jun 28, 8:56 PM CDT	Special Weather Statement	BIS	Burleigh	34 min
Jun 28, 9:15 PM CDT	Severe Thunderstorm Warning	BIS	Renville, Ward	45 min
Jun 28, 9:28 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	62 min
Jun 28, 9:29 PM CDT	Special Weather Statement	BIS	Kidder	31 min
Jun 28, 9:50 PM CDT	Severe Thunderstorm Warning Destructive damage threat	BIS	McLean	40 min
Jun 28, 10:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Bottineau, McHenry, Renville, Ward	58 min
Jun 28, 10:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry, McLean, Pierce, Sheridan, Wells	57 min
Jun 28, 10:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry, McLean, Ward	25 min
Jun 28, 11:06 PM CDT	Special Weather Statement	BIS	McLean	24 min
Jun 28, 11:13 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Wells	34 min
Jun 28, 11:31 PM CDT	Special Weather Statement	BIS	McHenry	29 min
Jun 28, 11:43 PM CDT	Severe Thunderstorm Warning	BIS	McHenry	62 min
Jun 29, 12:24 AM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Pierce	51 min
Jun 29, 2:18 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, McLean, Ward	57 min
Jun 29, 2:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Grant, Morton	60 min
Jun 29, 3:00 PM CDT	Tornado Warning	BIS	Morton	30 min
Jun 29, 3:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry, Ward	54 min
Jun 29, 3:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Burleigh, Morton	53 min
Jun 29, 3:19 PM CDT	Tornado Warning	BIS	Burleigh, Morton	41 min
Jun 29, 3:36 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	54 min
Jun 29, 3:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Burleigh	60 min
Jun 29, 4:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry	60 min
Jun 29, 4:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry, McLean, Ward	49 min
Jun 29, 4:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Burleigh, Kidder	62 min
Jun 29, 4:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McHenry, Ward	66 min
Jun 29, 5:00 PM CDT	Special Weather Statement	BIS	Adams	30 min
Jun 29, 5:05 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger	48 min
Jun 29, 5:17 PM CDT	Special Weather Statement	BIS	Slope	28 min
Jun 29, 5:50 PM CDT	Special Weather Statement	BIS	Slope	40 min
Jun 29, 5:58 PM CDT	Areal Flood Advisory	BIS	McHenry	3 hr
Jun 29, 6:50 PM CDT	Special Weather Statement	BIS	Billings, Slope	40 min

Nearby

Flash Flood Warnings in North Dakota, 2026 Every flash flood 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; radar from the NEXRAD Level II archive.