An upper level low along with a surface trough approaching western North Dakota led to thunderstorms developing during the late afternoon and evening hours. Some of these storms became severe in an environment of strong instability and deep layer shear. The largest hail was the size of golf balls, and occurred in Billings and Slope counties. The strongest wind gust was 70 mph, and occurred near Regent in Hettinger County.

Thunderstorm Wind in DIVIDE, NORTH DAKOTA
From 08-JUL-21 15:51:00 to 08-JUL-21 15:54:00 (CST-6)
Location: ALKABO
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in SLOPE, NORTH DAKOTA
From 08-JUL-21 15:52:00 to 08-JUL-21 15:55:00 (MST-7)
Location: AMIDON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SLOPE, NORTH DAKOTA
From 08-JUL-21 16:11:00 to 08-JUL-21 16:15:00 (MST-7)
Location: AMIDON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SLOPE, NORTH DAKOTA
From 08-JUL-21 16:17:00 to 08-JUL-21 16:20:00 (MST-7)
Location: AMIDON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 08-JUL-21 16:25:00 to 08-JUL-21 16:28:00 (CST-6)
Location: HANKS
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in SLOPE, NORTH DAKOTA
From 08-JUL-21 16:48:00 to 08-JUL-21 16:51:00 (MST-7)
Location: AMIDON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 08-JUL-21 16:59:00 to 08-JUL-21 17:02:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 08-JUL-21 16:59:00 to 08-JUL-21 17:02:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 08-JUL-21 17:03:00 to 08-JUL-21 17:06:00 (MST-7)
Location: WATFORD CITY
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 08-JUL-21 17:15:00 to 08-JUL-21 17:17:00 (MST-7)
Location: BUFFALO SPGS
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in ADAMS, NORTH DAKOTA
From 08-JUL-21 17:20:00 to 08-JUL-21 17:22:00 (MST-7)
Location: REEDER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ADAMS, NORTH DAKOTA
From 08-JUL-21 17:24:00 to 08-JUL-21 17:26:00 (MST-7)
Location: REEDER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 08-JUL-21 17:26:00 to 08-JUL-21 17:29:00 (CST-6)
Location: RAY
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in BILLINGS, NORTH DAKOTA
From 08-JUL-21 17:39:00 to 08-JUL-21 17:45:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 08-JUL-21 17:40:00 to 08-JUL-21 17:43:00 (MST-7)
Location: GRASSY BUTTE
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 08-JUL-21 17:42:00 to 08-JUL-21 17:45:00 (CST-6)
Location: WHEELOCK
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in DUNN, NORTH DAKOTA
From 08-JUL-21 17:44:00 to 08-JUL-21 17:47:00 (MST-7)
Location: NEW HRADEC
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HETTINGER, NORTH DAKOTA
From 08-JUL-21 19:18:00 to 08-JUL-21 19:21:00 (MST-7)
Location: REGENT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 08-JUL-21 19:26:00 to 08-JUL-21 19:29:00 (MST-7)
Location: REGENT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts were estimated by the public.

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 08-JUL-21 19:44:00 to 08-JUL-21 19:47:00 (MST-7)
Location: MOTT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm wind gusts were estimated by law enforecment.