Intense supercells formed in southwest North Dakota during the late afternoon with strong instability and deep layer shear in place. Initial supercells were discrete and very damaging with wind driven 3.25 inch diameter hail falling for an extended period of time in Killdeer, and baseball sized hail falling near Amidon. Damage estimates from the Killdeer area were around $20 million. Upscale growth then occurred with storms forming into a quasi-linear convective system that pushed through central North Dakota and then the James River Valley. Strong thunderstorm winds accompanied the line of storms. Additional elevated storms then formed later in the night over southwest and south central North Dakota as a low level jet increased and an upper level trough approached, with storms continuing overnight.

Hail in ADAMS, NORTH DAKOTA
From 10-JUL-16 22:20:00 to 10-JUL-16 22:23:00 (MST-7)
Location: BUCYRUS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 10-JUL-16 22:30:00 to 10-JUL-16 22:34:00 (CST-6)
Location: YPSILANTI
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated thunderstorm wind gusts of 60 mph.

Hail in GRANT, NORTH DAKOTA
From 10-JUL-16 23:08:00 to 10-JUL-16 23:12:00 (MST-7)
Location: NEW LEIPZIG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in EMMONS, NORTH DAKOTA
From 11-JUL-16 00:12:00 to 11-JUL-16 00:15:00 (CST-6)
Location: LINTON
Magnitude: 2.00 
Property damage: 50.00K
Crop damage: 20.00K
Reported by: Trained Spotter

Hail in SIOUX, NORTH DAKOTA
From 11-JUL-16 00:05:00 to 11-JUL-16 00:08:00 (MST-7)
Location: CANNON BALL
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in EMMONS, NORTH DAKOTA
From 11-JUL-16 01:29:00 to 11-JUL-16 01:33:00 (CST-6)
Location: TEMVIK
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in EMMONS, NORTH DAKOTA
From 11-JUL-16 01:55:00 to 11-JUL-16 02:00:00 (CST-6)
Location: KINTYRE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 150.00K
Reported by: Trained Spotter

Hail in EMMONS, NORTH DAKOTA
From 11-JUL-16 03:16:00 to 11-JUL-16 03:19:00 (CST-6)
Location: LINTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BILLINGS, NORTH DAKOTA
From 10-JUL-16 14:13:00 to 10-JUL-16 14:16:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BILLINGS, NORTH DAKOTA
From 10-JUL-16 14:15:00 to 10-JUL-16 14:19:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.75 
Property damage: 150.00K
Crop damage: 200.00K
Reported by: Public

Golf ball sized hail combined with wind gusts of 70 mph to break windows and cause significant damage to siding and roofs, and vehicles. Crop damage was high.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 19:52:00 to 10-JUL-16 19:55:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 70 mph.

Hail in BILLINGS, NORTH DAKOTA
From 10-JUL-16 14:32:00 to 10-JUL-16 14:35:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BILLINGS, NORTH DAKOTA
From 10-JUL-16 14:27:00 to 10-JUL-16 14:37:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DUNN, NORTH DAKOTA
From 10-JUL-16 14:47:00 to 10-JUL-16 14:57:00 (MST-7)
Location: KILLDEER
Magnitude: 1.75 
Property damage: 30.00K
Crop damage: 25.00K
Reported by: Trained Spotter

Hail in SLOPE, NORTH DAKOTA
From 10-JUL-16 14:52:00 to 10-JUL-16 14:55:00 (MST-7)
Location: MARMARTH
Magnitude: 1.75 
Property damage: 50.00K
Crop damage: 50.00K
Reported by: Public

Wind gusts to 60 mph also accompanied the hail.

Hail in DUNN, NORTH DAKOTA
From 10-JUL-16 15:00:00 to 10-JUL-16 15:30:00 (MST-7)
Location: KILLDEER
Magnitude: 3.25 
Property damage: 20.00M
Crop damage: 1.00M
Reported by: Law Enforcement

A slow moving supercell resulted in an extended period of very large hail and damaging wind gusts in and around the city of Killdeer. Hail up to 3.25 inches in diameter completely covered the ground in many locations. The hail combined with wind gusts of 75 mph to cause extreme damage to buildings, trees, and vehicles in the city. At the Killdeer nursing home windows were broken out and four rooms were damaged to the point where they were not habitable. Two residents sustained minor injuries. The first was injured (direct injury) when they were struck by broken flying glass. The other person was injured (direct injury) as they were evacuating their living area due to broken windows and fell on a wet floor as rain and hail were pouring in. Every field light at the new football stadium was destroyed, and every bus at the school was significantly damaged.  Significant damage occurred to vehicles including those at a dealership.

Hail in DUNN, NORTH DAKOTA
From 10-JUL-16 15:05:00 to 10-JUL-16 15:10:00 (MST-7)
Location: MANNING
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Funnel Cloud in DIVIDE, NORTH DAKOTA
From 10-JUL-16 15:30:00 to 10-JUL-16 15:32:00 (CST-6)
Location: CROSBY MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SLOPE, NORTH DAKOTA
From 10-JUL-16 15:34:00 to 10-JUL-16 15:46:00 (MST-7)
Location: AMIDON
Magnitude: 1.75 
Property damage: 125.00K
Crop damage: 50.00K
Reported by: Trained Spotter

The ground was covered with golf ball sized hail. The hail dented frames on windows and broke window screens. Windshields were broken on vehicles.

Thunderstorm Wind in DUNN, NORTH DAKOTA
From 10-JUL-16 15:45:00 to 10-JUL-16 15:50:00 (MST-7)
Location: WERNER
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches were broken around the marina at McKenzie Bay.

Hail in SLOPE, NORTH DAKOTA
From 10-JUL-16 15:50:00 to 10-JUL-16 15:56:00 (MST-7)
Location: AMIDON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SLOPE, NORTH DAKOTA
From 10-JUL-16 16:00:00 to 10-JUL-16 16:10:00 (MST-7)
Location: AMIDON
Magnitude: 2.75 
Property damage: 150.00K
Crop damage: 250.00K
Reported by: Trained Spotter

Crops and vehicles were extensively damaged from the baseball sized hail.

Hail in SLOPE, NORTH DAKOTA
From 10-JUL-16 16:08:00 to 10-JUL-16 16:12:00 (MST-7)
Location: AMIDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STARK, NORTH DAKOTA
From 10-JUL-16 16:44:00 to 10-JUL-16 16:47:00 (MST-7)
Location: (DIK)DICKINSON MUNI
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 10-JUL-16 16:45:00 to 10-JUL-16 16:48:00 (MST-7)
Location: REGENT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 70 mph.

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 10-JUL-16 17:10:00 to 10-JUL-16 17:13:00 (MST-7)
Location: MOTT
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 75 mph.

Thunderstorm Wind in ADAMS, NORTH DAKOTA
From 10-JUL-16 17:25:00 to 10-JUL-16 17:27:00 (MST-7)
Location: HETTINGER ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated wind gusts of 60 mph.

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 10-JUL-16 17:45:00 to 10-JUL-16 17:55:00 (MST-7)
Location: BENTLEY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 65 mph.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 18:20:00 to 10-JUL-16 18:25:00 (CST-6)
Location: HEBRON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated thunderstorm wind gusts of 60 mph.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 18:38:00 to 10-JUL-16 18:42:00 (CST-6)
Location: GLEN ULLIN
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 70 mph.

Thunderstorm Wind in MERCER, NORTH DAKOTA
From 10-JUL-16 18:55:00 to 10-JUL-16 18:58:00 (CST-6)
Location: BEULAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Hail in SIOUX, NORTH DAKOTA
From 10-JUL-16 23:30:00 to 10-JUL-16 23:33:00 (MST-7)
Location: SELFRIDGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Funnel Cloud in GRANT, NORTH DAKOTA
From 10-JUL-16 18:57:00 to 10-JUL-16 18:59:00 (MST-7)
Location: SHIELDS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in GRANT, NORTH DAKOTA
From 10-JUL-16 18:57:00 to 10-JUL-16 19:01:00 (MST-7)
Location: SHIELDS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated thunderstorm wind gusts of 70 mph.

Funnel Cloud in WILLIAMS, NORTH DAKOTA
From 10-JUL-16 19:00:00 to 10-JUL-16 19:03:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in MERCER, NORTH DAKOTA
From 10-JUL-16 19:15:00 to 10-JUL-16 19:18:00 (CST-6)
Location: HAZEN
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 19:35:00 to 10-JUL-16 19:38:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 19:56:00 to 10-JUL-16 19:59:00 (CST-6)
Location: MANDAN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated thunderstorm wind gusts of 70 mph.

Hail in MORTON, NORTH DAKOTA
From 10-JUL-16 19:58:00 to 10-JUL-16 20:00:00 (CST-6)
Location: MANDAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCLEAN, NORTH DAKOTA
From 10-JUL-16 20:20:00 to 10-JUL-16 20:23:00 (CST-6)
Location: RUSO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 10-JUL-16 20:27:00 to 10-JUL-16 20:30:00 (CST-6)
Location: BREIEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated thunderstorm wind gusts of 60 mph.

Hail in BURLEIGH, NORTH DAKOTA
From 10-JUL-16 20:27:00 to 10-JUL-16 20:30:00 (CST-6)
Location: BISMARCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KIDDER, NORTH DAKOTA
From 10-JUL-16 21:11:00 to 10-JUL-16 21:15:00 (CST-6)
Location: STEELE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public estimated thunderstorm wind gusts of 65 mph.

Hail in WELLS, NORTH DAKOTA
From 10-JUL-16 21:23:00 to 10-JUL-16 21:28:00 (CST-6)
Location: CHASELEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 10-JUL-16 21:50:00 to 10-JUL-16 21:58:00 (CST-6)
Location: MEDINA
Magnitude: 70.00 EG
Property damage: 75.00K
Crop damage: 30.00K
Reported by: Trained Spotter

Multiple large trees were uprooted throughout the city of Medina.

Hail in ADAMS, NORTH DAKOTA
From 10-JUL-16 22:05:00 to 10-JUL-16 22:08:00 (MST-7)
Location: BUCYRUS
Magnitude: 2.50 
Property damage: 30.00K
Crop damage: 20.00K
Reported by: Public

Thunderstorm Wind in STUTSMAN, NORTH DAKOTA
From 10-JUL-16 22:10:00 to 10-JUL-16 22:13:00 (CST-6)
Location: ELDRIDGE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet