Thunderstorms developed mid-day along and ahead of a slowly advancing cold front over northwestern North Dakota in an unseasonably moist and unstable atmosphere. The storms then spread south and east through the day. Some of the storms became severe with an initial threat of large hail, though some strong wind gusts were occurring by late day. The largest reported hail was the size of baseballs, which fell in Ward and Bottineau counties. The strongest reported thunderstorm wind gust was 62 mph, which occurred in Burleigh County. During the evening and overnight hours the primary threat switched to heavy rain, particularly over central North Dakota.  Over southern portions of Wells and Sheridan Counties, up to seven inches of rain was reported resulting in washed out roads, crop damage, and hay bales partially submerged in water.

Hail in WARD, NORTH DAKOTA
From 20-SEP-19 14:27:00 to 20-SEP-19 14:30:00 (CST-6)
Location: (MIB)MINOT AFB
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EMMONS, NORTH DAKOTA
From 20-SEP-19 15:36:00 to 20-SEP-19 15:39:00 (CST-6)
Location: LINTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BURLEIGH, NORTH DAKOTA
From 20-SEP-19 16:03:00 to 20-SEP-19 16:06:00 (CST-6)
Location: (BIS)BISMARCK MUNI A
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SHERIDAN, NORTH DAKOTA
From 20-SEP-19 16:12:00 to 20-SEP-19 16:15:00 (CST-6)
Location: DENHOFF
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BURLEIGH, NORTH DAKOTA
From 20-SEP-19 16:12:00 to 20-SEP-19 16:14:00 (CST-6)
Location: MOFFIT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in MORTON, NORTH DAKOTA
From 20-SEP-19 17:42:00 to 20-SEP-19 17:44:00 (CST-6)
Location: BREIEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOTTINEAU, NORTH DAKOTA
From 20-SEP-19 12:40:00 to 20-SEP-19 12:42:00 (CST-6)
Location: MAXBASS
Magnitude: 2.75 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

A window was broken on the home, and holes were punched in the siding.

Hail in BOTTINEAU, NORTH DAKOTA
From 20-SEP-19 12:45:00 to 20-SEP-19 12:49:00 (CST-6)
Location: WESTHOPE
Magnitude: 2.25 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Windshields were broken on cars. Homes and mailboxes were damaged.

Hail in MOUNTRAIL, NORTH DAKOTA
From 20-SEP-19 10:36:00 to 20-SEP-19 10:39:00 (CST-6)
Location: NEW TOWN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MOUNTRAIL, NORTH DAKOTA
From 20-SEP-19 11:35:00 to 20-SEP-19 11:39:00 (CST-6)
Location: BLAISDELL
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in WELLS, NORTH DAKOTA
From 20-SEP-19 23:30:00 to 21-SEP-19 04:00:00 (CST-6)
Location: HURDSFIELD
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 700.00K
Reported by: Emergency Manager

Deep flood waters flowed over many roads and caused damage throughout much of southern Wells County, where up to seven inches of rain fell from thunderstorms. Multiple roads were washed out and so closed for days. Parts of State Highway 200 and U.S. Highway 52 were closed resulting in major traffic detours. A part of State Highway 200 near Bowdon was washed out. The heavy rain also caused crop damage and yield loss. Hay bales were partially submerged in flood water. Soil erosion was extensive.

Hail in WARD, NORTH DAKOTA
From 20-SEP-19 13:30:00 to 20-SEP-19 13:33:00 (CST-6)
Location: BURLINGTON
Magnitude: 2.75 
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Public

Vehicle windshields were broken. On homes, windows were broken and siding was damaged.

Flash Flood in SHERIDAN, NORTH DAKOTA
From 20-SEP-19 23:45:00 to 21-SEP-19 04:00:00 (CST-6)
Location: GOODRICH
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 250.00K
Reported by: Public

Flood waters a few feet deep washed over rural roads in southern Sheridan County damaging many of them. Just over six inches of rain was reported. Crops were damaged with significant soil erosion occurring.

Hail in WARD, NORTH DAKOTA
From 20-SEP-19 11:35:00 to 20-SEP-19 11:38:00 (CST-6)
Location: BERTHOLD
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOTTINEAU, NORTH DAKOTA
From 20-SEP-19 12:35:00 to 20-SEP-19 12:39:00 (CST-6)
Location: MAXBASS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WARD, NORTH DAKOTA
From 20-SEP-19 13:12:00 to 20-SEP-19 13:15:00 (CST-6)
Location: RYDER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WARD, NORTH DAKOTA
From 20-SEP-19 13:56:00 to 20-SEP-19 13:59:00 (CST-6)
Location: (MIB)MINOT AFB
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency