A slow-moving isolated supercell developed in Morton County along a weak cold front during the evening hours in an environment with very strong instability and significant low level moisture. The storm weakened in the late evening as additional storms moved out of southeast Montana into southwest North Dakota. The storms grew into a large bow echo that propagated northeast in a moisture rich environment, with a few supercells developing ahead of the bow. The greatest amount of damage occurred in the Bismarck area of Burleigh County, where very strong wind gusts combined with hail as large as baseballs causing extensive damage to northern portions of the city along with rural locations to the north. The strongest winds were reported in Hettinger County near Bert, where gusts to 80 mph occurred.

Thunderstorm Wind in STARK, NORTH DAKOTA
From 17-JUN-16 00:20:00 to 17-JUN-16 00:22:00 (MST-7)
Location: (DIK)DICKINSON MUNI
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in STARK, NORTH DAKOTA
From 17-JUN-16 00:50:00 to 17-JUN-16 00:53:00 (MST-7)
Location: RICHARDTON
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 17-JUN-16 01:00:00 to 17-JUN-16 01:10:00 (MST-7)
Location: BURT
Magnitude: 70.00 EG
Property damage: 250.00K
Crop damage: 100.00K
Reported by: Emergency Manager

Damaging winds of 80 mph were accompanied by 2.25 inch diameter hail to cause extensive damage to outbuildings and windows on a farm to the north of Burt. Grain bins were torn off their foundations and thrown into a nearby field. Crops were flattened.

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 02:05:00 to 17-JUN-16 02:08:00 (CST-6)
Location: HEBRON
Magnitude: 1.50 
Property damage: 250.00K
Crop damage: 50.00K
Reported by: Public

The hail combined with gusty winds to cause damage to the windows, siding, and roofs of homes in Hebron.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 17-JUN-16 02:05:00 to 17-JUN-16 02:09:00 (CST-6)
Location: HEBRON
Magnitude: 65.00 EG
Property damage: 200.00K
Crop damage: 50.00K
Reported by: Public

High winds knocked over grain bins, 18-inch diameter trees, and power lines south of Hebron.  The winds combined with hail to cause damage to homes.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 17-JUN-16 02:20:00 to 17-JUN-16 02:24:00 (CST-6)
Location: GLEN ULLIN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated by a trained spotter.

Hail in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 03:25:00 to 17-JUN-16 03:35:00 (CST-6)
Location: BISMARCK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 03:40:00 to 17-JUN-16 03:43:00 (CST-6)
Location: BALDWIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Hail in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 04:10:00 to 17-JUN-16 04:13:00 (CST-6)
Location: DRISCOLL
Magnitude: 2.50 
Property damage: 15.00K
Crop damage: 20.00K
Reported by: Public

Hail in HETTINGER, NORTH DAKOTA
From 17-JUN-16 01:00:00 to 17-JUN-16 01:03:00 (MST-7)
Location: MOTT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 01:25:00 to 17-JUN-16 01:30:00 (CST-6)
Location: FLASHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 01:55:00 to 17-JUN-16 01:57:00 (CST-6)
Location: ST ANTHONY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 02:20:00 to 17-JUN-16 02:24:00 (CST-6)
Location: GLEN ULLIN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 17-JUN-16 02:41:00 to 17-JUN-16 02:44:00 (CST-6)
Location: FLASHER
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 02:51:00 to 17-JUN-16 02:54:00 (CST-6)
Location: NEW SALEM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 17-JUN-16 04:17:00 to 17-JUN-16 04:19:00 (CST-6)
Location: STEELE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong wind gusts estimated by the public.

Hail in WELLS, NORTH DAKOTA
From 17-JUN-16 05:00:00 to 17-JUN-16 05:02:00 (CST-6)
Location: BREMEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 25.00K
Reported by: Broadcast Media

Thunderstorm Wind in FOSTER, NORTH DAKOTA
From 17-JUN-16 05:15:00 to 17-JUN-16 05:37:00 (CST-6)
Location: CARRINGTON ARPT
Magnitude: 69.00 MG
Property damage: 100.00K
Crop damage: 100.00K
Reported by: AWOS

Winds gusted over 60 mph for a prolonged period of time, with the strongest gust of 79 mph occurring at approximately 615 am CDT. The strong winds resulted in downed trees and power lines. Pea sized hail accompanied the winds.

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 03:01:00 to 17-JUN-16 03:04:00 (CST-6)
Location: FLASHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in MORTON, NORTH DAKOTA
From 17-JUN-16 03:21:00 to 17-JUN-16 03:25:00 (CST-6)
Location: MANDAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 03:23:00 to 17-JUN-16 03:28:00 (CST-6)
Location: (BIS)BISMARCK MUNI A
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 03:30:00 to 17-JUN-16 03:45:00 (CST-6)
Location: BISMARCK
Magnitude: 3.25 
Property damage: 50.00M
Crop damage: 250.00K
Reported by: Local Official

A severe thunderstorm struck northern portions of the city of Bismarck around 4:30 AM CDT. Large hail combined with strong wind gusts to cause substantial damage.  The largest hail with a diameter of 3.25 inches fell near Legacy High School. Winds of 75 mph combined with large hail to cause a swath of substantial damage from along Divide Avenue in north Bismarck to approximately five miles north of the city of Bismarck. Siding, roofs, and windows were damaged on homes. Multiple car dealerships sustained hail damage, which included the largest dealership in the city.

Hail in BURLEIGH, NORTH DAKOTA
From 17-JUN-16 04:10:00 to 17-JUN-16 04:14:00 (CST-6)
Location: DRISCOLL
Magnitude: 3.00 
Property damage: 50.00K
Crop damage: 50.00K
Reported by: Department of Highways

Hail in MORTON, NORTH DAKOTA
From 16-JUN-16 20:20:00 to 16-JUN-16 20:23:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 16-JUN-16 21:00:00 to 16-JUN-16 21:03:00 (CST-6)
Location: FLASHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 16-JUN-16 22:00:00 to 16-JUN-16 22:03:00 (CST-6)
Location: BREIEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SLOPE, NORTH DAKOTA
From 16-JUN-16 23:15:00 to 16-JUN-16 23:17:00 (MST-7)
Location: AMIDON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public