A line of severe thunderstorms developed to the east of the Rocky Mountains in Montana, which quickly developed east during the late afternoon and early evening hours. A second area of storms lifted from the Bighorn Mountains towards the east-northeast. These broad lines of thunderstorms entered western North Dakota during the mid to late evening hours. Widespread damaging winds occurred, along with one tornado, as they moved through western and central North Dakota. Late in the episode, a strong low level jet developed ahead of the advancing line of strong winds, producing thunderstorms over the James River Valley, with one severe thunderstorm producing two inch diameter hail in Sutsman County. The strongest wind gust was estimated to be 90 mph around Anamoose, McHenry County, where a building was destroyed, other buildings and vehicles were damaged, and widespread tree damage occurred. A tornado also developed along the line of thunderstorms in Oliver County, causing tree damage at Cross Ranch State Park.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 07-JUL-20 19:10:00 to 07-JUL-20 19:13:00 (MST-7)
Location: RHAME
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in SLOPE, NORTH DAKOTA
From 07-JUL-20 19:18:00 to 07-JUL-20 19:21:00 (MST-7)
Location: AMIDON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts estimated by Emergency Manager.

Thunderstorm Wind in BURKE, NORTH DAKOTA
From 07-JUL-20 21:35:00 to 07-JUL-20 21:37:00 (CST-6)
Location: LIGNITE
Magnitude: 65.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

A shop had its doors blown out, and a cable snapped on one side of a bi-fold garage door.

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 07-JUL-20 19:50:00 to 07-JUL-20 19:54:00 (MST-7)
Location: WATFORD CITY
Magnitude: 55.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A chicken coop was damaged.

Thunderstorm Wind in SLOPE, NORTH DAKOTA
From 07-JUL-20 19:30:00 to 07-JUL-20 19:33:00 (MST-7)
Location: AMIDON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 07-JUL-20 19:45:00 to 07-JUL-20 19:48:00 (MST-7)
Location: WATFORD CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated by a trained spotter.

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 07-JUL-20 20:30:00 to 07-JUL-20 20:33:00 (CST-6)
Location: WILLISTON
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Damage included a quonset door caving in, shingles and soffit being ripped off a building, and tree damage.

Thunderstorm Wind in WARD, NORTH DAKOTA
From 07-JUL-20 22:30:00 to 07-JUL-20 22:36:00 (CST-6)
Location: SOUTH PRAIRIE
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

An outdoor play set was tumbled and destroyed, and a vehicle was damaged.

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 07-JUL-20 19:52:00 to 07-JUL-20 19:55:00 (MST-7)
Location: CHARLSON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in STARK, NORTH DAKOTA
From 07-JUL-20 20:04:00 to 07-JUL-20 20:06:00 (MST-7)
Location: (DIK)DICKINSON MUNI
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:35:00 to 07-JUL-20 22:38:00 (CST-6)
Location: GARRISON MUNI ARPT
Magnitude: 70.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Public

The roof of a home was severely damaged.

Thunderstorm Wind in ROLETTE, NORTH DAKOTA
From 08-JUL-20 00:00:00 to 08-JUL-20 00:04:00 (CST-6)
Location: ROLETTE
Magnitude: 63.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree blew over.

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 07-JUL-20 20:11:00 to 07-JUL-20 20:13:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in STARK, NORTH DAKOTA
From 07-JUL-20 20:16:00 to 07-JUL-20 20:19:00 (MST-7)
Location: GLADSTONE
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in PIERCE, NORTH DAKOTA
From 07-JUL-20 23:55:00 to 08-JUL-20 00:00:00 (CST-6)
Location: RUGBY
Magnitude: 75.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Multiple power poles were snapped.

Thunderstorm Wind in WELLS, NORTH DAKOTA
From 07-JUL-20 23:35:00 to 07-JUL-20 23:35:00 (CST-6)
Location: HARVEY
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches were down.

Thunderstorm Wind in STARK, NORTH DAKOTA
From 07-JUL-20 20:25:00 to 07-JUL-20 20:27:00 (MST-7)
Location: GLADSTONE
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 07-JUL-20 20:26:00 to 07-JUL-20 20:29:00 (CST-6)
Location: ALAMO
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MCHENRY, NORTH DAKOTA
From 07-JUL-20 23:30:00 to 07-JUL-20 23:35:00 (CST-6)
Location: ANAMOOSE
Magnitude: 78.00 EG
Property damage: 850.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A fertilizer and chemical storage building to the west of Anamoose was destroyed.  A one-half mile stretch of power lines were down onto Highway 52. Many trees were severely damaged or toppled within the city of Anamoose, with vehicles and some structures damaged.

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:56:00 to 07-JUL-20 22:58:00 (CST-6)
Location: TURTLE LAKE
Magnitude: 68.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Mesonet

Many trees were damaged in the area.

Thunderstorm Wind in STARK, NORTH DAKOTA
From 07-JUL-20 20:31:00 to 07-JUL-20 20:33:00 (MST-7)
Location: GLADSTONE
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DIVIDE, NORTH DAKOTA
From 07-JUL-20 20:45:00 to 07-JUL-20 20:47:00 (CST-6)
Location: CROSBY
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:42:00 to 07-JUL-20 22:44:00 (CST-6)
Location: GARRISON MUNI ARPT
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Garage door blown in.

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:42:00 to 07-JUL-20 22:45:00 (CST-6)
Location: WASHBURN
Magnitude: 72.00 MG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Mesonet

Many trees were blown down in the park along the river in Washburn, at the 4-H camp, and throughout the city. The concession stand and outhouses were blown over at the baseball park. Some buildings were damaged.

Thunderstorm Wind in GRANT, NORTH DAKOTA
From 07-JUL-20 20:55:00 to 07-JUL-20 20:57:00 (MST-7)
Location: ELGIN MUNI ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm wind gusts were estimated by a COOP Observer.

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 07-JUL-20 21:11:00 to 07-JUL-20 21:14:00 (CST-6)
Location: MANITOU
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated by the Emergency Manager.

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:40:00 to 07-JUL-20 22:43:00 (CST-6)
Location: UNDERWOOD
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches were down.

Tornado in OLIVER, NORTH DAKOTA
From 07-JUL-20 22:30:00 to 07-JUL-20 22:31:00 (CST-6)
Location: SANGER
Tornado F-scale: EF1
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado touched down in Cross Ranch State Park and passed along the Matah Trail before lifting along the shores of the Missouri River. Large Cottonwood trees were twisted and broken into many different directions. Based on the damage done the tornado was rated EF-1. From that, wind speeds were estimated to have been around 90 mph.

Thunderstorm Wind in DIVIDE, NORTH DAKOTA
From 07-JUL-20 21:15:00 to 07-JUL-20 21:17:00 (CST-6)
Location: CROSBY MUNI ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 07-JUL-20 21:16:00 to 07-JUL-20 21:18:00 (CST-6)
Location: NEW TOWN
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 07-JUL-20 21:20:00 to 07-JUL-20 21:22:00 (CST-6)
Location: STANLEY MUNI ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MOUNTRAIL, NORTH DAKOTA
From 07-JUL-20 22:01:00 to 07-JUL-20 22:05:00 (CST-6)
Location: BLAISDELL
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MERCER, NORTH DAKOTA
From 07-JUL-20 22:10:00 to 07-JUL-20 22:13:00 (CST-6)
Location: GOLDEN VLY
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 07-JUL-20 22:16:00 to 07-JUL-20 22:18:00 (CST-6)
Location: NEW SALEM
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MERCER, NORTH DAKOTA
From 07-JUL-20 22:18:00 to 07-JUL-20 22:20:00 (CST-6)
Location: STANTON
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in MERCER, NORTH DAKOTA
From 07-JUL-20 22:24:00 to 07-JUL-20 22:26:00 (CST-6)
Location: HAZEN
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 07-JUL-20 22:40:00 to 07-JUL-20 22:43:00 (CST-6)
Location: (BIS)BISMARCK MUNI A
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in MCLEAN, NORTH DAKOTA
From 07-JUL-20 22:42:00 to 07-JUL-20 22:45:00 (CST-6)
Location: GARRISON
Magnitude: 71.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in WARD, NORTH DAKOTA
From 07-JUL-20 22:46:00 to 07-JUL-20 22:48:00 (CST-6)
Location: SAWYER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 07-JUL-20 22:46:00 to 07-JUL-20 22:48:00 (CST-6)
Location: BISMARCK
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 07-JUL-20 23:11:00 to 07-JUL-20 23:13:00 (CST-6)
Location: STERLING
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in STUTSMAN, NORTH DAKOTA
From 07-JUL-20 23:12:00 to 07-JUL-20 23:15:00 (CST-6)
Location: WINDSOR
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 07-JUL-20 23:16:00 to 07-JUL-20 23:19:00 (CST-6)
Location: MOFFIT
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in WELLS, NORTH DAKOTA
From 07-JUL-20 23:31:00 to 07-JUL-20 23:33:00 (CST-6)
Location: CHASELEY
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree branches were down.

Thunderstorm Wind in FOSTER, NORTH DAKOTA
From 07-JUL-20 23:59:00 to 08-JUL-20 00:02:00 (CST-6)
Location: CARRINGTON ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 07-JUL-20 19:30:00 to 07-JUL-20 19:35:00 (MST-7)
Location: ALEXANDER
Magnitude: 70.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Half of the roof was blown off a large barn.