An extended period consisting of two days of continuous severe weather occurred from June 7 through June 8. Thunderstorms initially developed along a warm front over the James River Valley into parts of south central North Dakota where strong instability and deep layer shear were noted. During the evening, a mix of wind and hail damage occurred. The largest hail reported during this period was 2.25 inches in diameter which occurred in Logan County, while the strongest reported wind gust occurred in LaMoure County, which was estimated at 80 mph. In addition a tornado occurred in Stutsman County. The tornado caused no damage and was rated EF-U, EF Unknown. As the night went on, a strong low level jet sustained severe thunderstorms. These continued into the morning, before storms started gradually spreading to the west along the slow moving, if not stationary, warm front that initiated the storms the previous evening. From early morning into the afternoon, large hail and damaging wind gusts remained a concern, but the primary threat became flooding due to the slow moving storms gradually back-building towards the west. The initial flooding occurred over the southern James River Valley, particularly near the city of Marion in LaMoure County. The flooding concerns then gradually spread west into Kidder, Emmons, Burleigh, and Grant counties. Later in the afternoon into the evening and nighttime hours as the storms developed over far western North Dakota, the main threats changed back to large hail and damaging wind gusts. During this time period, the largest reported hail was the size of a baseball, which fell in Golden Valley County. The strongest reported wind gust was estimated to be at 80 mph, in Billings County.

Funnel Cloud in MCKENZIE, NORTH DAKOTA
From 08-JUN-21 18:25:00 to 08-JUN-21 18:26:00 (MST-7)
Location: KEENE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 08-JUN-21 14:11:00 to 08-JUN-21 14:13:00 (MST-7)
Location: BENTLEY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 18:06:00 to 07-JUN-21 18:10:00 (CST-6)
Location: DANZIG
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

One-inch diameter tree limbs were broken, and some shingles were blown off a structure.

Thunderstorm Wind in LA MOURE, NORTH DAKOTA
From 07-JUN-21 18:28:00 to 07-JUN-21 18:34:00 (CST-6)
Location: JUD
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

A majority of the second story of an older barn was destroyed. A tree was down and a 500 gallon propane tank was moved on top of the tree. A corral was damaged, and some sheet metal blew off of a machine shed. A power pole with transformer was also toppled.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 17:58:00 to 07-JUN-21 18:00:00 (CST-6)
Location: ASHLEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LOGAN, NORTH DAKOTA
From 07-JUN-21 18:47:00 to 07-JUN-21 18:50:00 (CST-6)
Location: GACKLE
Magnitude: 2.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 20:00:00 to 07-JUN-21 20:02:00 (CST-6)
Location: SYDNEY
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A tree was blown over.  Diameter of the tree is unknown.

Hail in LA MOURE, NORTH DAKOTA
From 08-JUN-21 00:47:00 to 08-JUN-21 00:49:00 (CST-6)
Location: ADRIAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 06:50:00 to 08-JUN-21 06:53:00 (CST-6)
Location: MEDINA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement estimated wind gusts of 70 mph.

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 08-JUN-21 11:47:00 to 08-JUN-21 11:49:00 (CST-6)
Location: MOFFIT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BILLINGS, NORTH DAKOTA
From 08-JUN-21 18:45:00 to 08-JUN-21 18:49:00 (MST-7)
Location: FAIRFIELD
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Trees were knocked down at the residence. A neighbor nearby had a machine shed destroyed. In addition some power poles were snapped nearby.

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 08-JUN-21 22:08:00 to 08-JUN-21 22:10:00 (MST-7)
Location: BENTLEY
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in LOGAN, NORTH DAKOTA
From 07-JUN-21 18:17:00 to 07-JUN-21 18:21:00 (CST-6)
Location: LEHR
Magnitude: 65.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A power pole was snapped off at its base.

Tornado in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 19:57:00 to 07-JUN-21 19:59:00 (CST-6)
Location: MILLARTON
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado touched down in an open field west of Millarton. There was no damage to evaluate and so by National Weather Service policy the tornado is rated EF Unknown.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 18:05:00 to 07-JUN-21 18:08:00 (CST-6)
Location: DANZIG
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LOGAN, NORTH DAKOTA
From 07-JUN-21 18:49:00 to 07-JUN-21 18:51:00 (CST-6)
Location: LEHR
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 20:00:00 to 07-JUN-21 20:04:00 (CST-6)
Location: SYDNEY
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A tree blew down on a power line.

Hail in LA MOURE, NORTH DAKOTA
From 08-JUN-21 01:13:00 to 08-JUN-21 01:14:00 (CST-6)
Location: ADRIAN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 07:23:00 to 08-JUN-21 07:25:00 (CST-6)
Location: MEDINA
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in GRANT, NORTH DAKOTA
From 08-JUN-21 13:35:00 to 08-JUN-21 13:37:00 (MST-7)
Location: ELGIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported thunderstorm wind gusts of 60 mph.

Thunderstorm Wind in DUNN, NORTH DAKOTA
From 08-JUN-21 19:20:00 to 08-JUN-21 19:24:00 (MST-7)
Location: MANNING
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

A cellular phone tower was blown down.

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 08-JUN-21 22:44:00 to 08-JUN-21 22:49:00 (CST-6)
Location: TRENTON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree was blown over.

Flash Flood in BURLEIGH, NORTH DAKOTA
From 08-JUN-21 11:45:00 to 08-JUN-21 15:00:00 (CST-6)
Location: MOFFIT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Over five inches of rain was estimated to have fallen over far southeast Burleigh County. This heavy rain damaged roads and culverts.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 18:11:00 to 07-JUN-21 18:14:00 (CST-6)
Location: DANZIG
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 18:50:00 to 07-JUN-21 18:53:00 (CST-6)
Location: MILLARTON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LA MOURE, NORTH DAKOTA
From 07-JUN-21 20:30:00 to 07-JUN-21 20:33:00 (CST-6)
Location: MARION
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in LA MOURE, NORTH DAKOTA
From 08-JUN-21 01:14:00 to 08-JUN-21 01:16:00 (CST-6)
Location: ADRIAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIDDER, NORTH DAKOTA
From 08-JUN-21 08:40:00 to 08-JUN-21 08:44:00 (CST-6)
Location: STEELE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRANT, NORTH DAKOTA
From 08-JUN-21 13:40:00 to 08-JUN-21 13:43:00 (MST-7)
Location: ELGIN MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 17:49:00 to 07-JUN-21 17:51:00 (CST-6)
Location: MEDINA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 18:20:00 to 07-JUN-21 18:23:00 (CST-6)
Location: WISHEK
Magnitude: 65.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A power pole was snapped.

Hail in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 19:10:00 to 07-JUN-21 19:12:00 (CST-6)
Location: MILLARTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 21:35:00 to 07-JUN-21 21:38:00 (CST-6)
Location: WISHEK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LA MOURE, NORTH DAKOTA
From 08-JUN-21 01:17:00 to 08-JUN-21 01:20:00 (CST-6)
Location: ADRIAN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIDDER, NORTH DAKOTA
From 08-JUN-21 08:40:00 to 08-JUN-21 08:44:00 (CST-6)
Location: STEELE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRANT, NORTH DAKOTA
From 08-JUN-21 13:48:00 to 08-JUN-21 13:51:00 (MST-7)
Location: SHIELDS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 08-JUN-21 20:00:00 to 08-JUN-21 20:05:00 (CST-6)
Location: NEW TOWN
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple mature trees were blown over, with some being 30 to 40 feet in height. Some power lines were damaged.

Flash Flood in LA MOURE, NORTH DAKOTA
From 08-JUN-21 03:00:00 to 08-JUN-21 07:00:00 (CST-6)
Location: MARION
Flood cause: Heavy Rain
Property damage: 400.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Over six inches of rain fell over parts of northeast LaMoure County, with unconfirmed reports of ten inches near Marion. This led to flooding in the city of Marion, with water flowing over roads and up to homes. County roads were also flooded, with water flowing over causing extensive damage.

Flash Flood in GRANT, NORTH DAKOTA
From 08-JUN-21 14:30:00 to 08-JUN-21 17:30:00 (MST-7)
Location: RALEIGH
Flood cause: Heavy Rain
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Over five inches of rain fell over southeastern Grand County. Flood waters washed out 75th Street near Freda, which is east of the community of Raleigh.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 17:54:00 to 07-JUN-21 17:56:00 (CST-6)
Location: DANZIG
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LOGAN, NORTH DAKOTA
From 07-JUN-21 18:33:00 to 07-JUN-21 18:36:00 (CST-6)
Location: BURNSTAD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LOGAN, NORTH DAKOTA
From 07-JUN-21 19:28:00 to 07-JUN-21 19:30:00 (CST-6)
Location: GACKLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 21:57:00 to 07-JUN-21 21:59:00 (CST-6)
Location: WISHEK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 01:55:00 to 08-JUN-21 01:57:00 (CST-6)
Location: JAMESTOWN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser reported 60 mph thunderstorm wind gusts.

Hail in KIDDER, NORTH DAKOTA
From 08-JUN-21 08:45:00 to 08-JUN-21 08:48:00 (CST-6)
Location: TAPPEN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GOLDEN VALLEY, NORTH DAKOTA
From 08-JUN-21 17:00:00 to 08-JUN-21 17:03:00 (MST-7)
Location: TROTTERS
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 08-JUN-21 21:20:00 to 08-JUN-21 21:22:00 (MST-7)
Location: FAIRVIEW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm wind gusts were estimated by a storm chaser.

Hail in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 02:07:00 to 08-JUN-21 02:09:00 (CST-6)
Location: JAMESTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 08-JUN-21 09:15:00 to 08-JUN-21 09:19:00 (CST-6)
Location: STEELE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down.

Thunderstorm Wind in ADAMS, NORTH DAKOTA
From 08-JUN-21 21:50:00 to 08-JUN-21 21:54:00 (MST-7)
Location: HETTINGER ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds moved a section of oil pipe and a wind break panel.

Hail in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 03:07:00 to 08-JUN-21 03:10:00 (CST-6)
Location: STATE HOSPITAL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 08-JUN-21 09:20:00 to 08-JUN-21 09:24:00 (CST-6)
Location: STEELE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down.

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 08-JUN-21 06:30:00 to 08-JUN-21 06:33:00 (CST-6)
Location: MEDINA
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A shed was damaged.

Hail in EMMONS, NORTH DAKOTA
From 08-JUN-21 10:45:00 to 08-JUN-21 10:48:00 (CST-6)
Location: HAZELTON ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SIOUX, NORTH DAKOTA
From 08-JUN-21 11:30:00 to 08-JUN-21 11:33:00 (MST-7)
Location: SOLEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in KIDDER, NORTH DAKOTA
From 08-JUN-21 10:20:00 to 08-JUN-21 13:00:00 (CST-6)
Location: STEELE MUNI ARPT
Flood cause: Heavy Rain
Property damage: 350.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Over four inches of rain was measured over various parts of southwest Kidder County, with radar estimates of over six inches. In the city of Steele, many roads were under water. Over rural portions of the county affected by the heavy rain, multiple gravel road and culvert washouts occurred.

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 07-JUN-21 17:55:00 to 07-JUN-21 17:57:00 (CST-6)
Location: CLEVELAND
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm wind gusts were estimated by an National Weather Service employee.

Hail in MCINTOSH, NORTH DAKOTA
From 07-JUN-21 19:30:00 to 07-JUN-21 19:33:00 (CST-6)
Location: WISHEK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GOLDEN VALLEY, NORTH DAKOTA
From 08-JUN-21 17:10:00 to 08-JUN-21 17:13:00 (MST-7)
Location: TROTTERS
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in EMMONS, NORTH DAKOTA
From 08-JUN-21 11:45:00 to 08-JUN-21 15:00:00 (CST-6)
Location: KINTYRE
Flood cause: Heavy Rain
Property damage: 600.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Over five inches of rain was measured over parts of west-central into northeast Emmons County, with over seven inches indicated on radar, leading to flash flooding. In Hazelton, streets and yards flooded. Near Braddock, a mail delivery vehicle was swept away in flood waters, along with another vehicle. Multiple rural roads were heavily damaged.

Hail in LOGAN, NORTH DAKOTA
From 07-JUN-21 18:46:00 to 07-JUN-21 18:49:00 (CST-6)
Location: LEHR
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCKENZIE, NORTH DAKOTA
From 08-JUN-21 17:28:00 to 08-JUN-21 17:30:00 (MST-7)
Location: GRASSY BUTTE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public