Thunderstorms moved into southwest North Dakota during the late night hours ahead of a strong short-wave trough. Initially, the main threat with the thunderstorms was damaging wind gusts. As the storms moved through south central North Dakota and into the James River Valley during the early morning hours, the threat shifted to a mix of damaging wind gusts and large hail hail as a low-level jet increased. The largest hail was golf ball size, and fell in both Stutsman and Logan counties. The strongest wind gust was estimated at 95 mph in LaMoure County where significant damage occurred to two farmsteads.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 13-AUG-20 22:05:00 to 13-AUG-20 22:07:00 (MST-7)
Location: RHAME
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 13-AUG-20 22:14:00 to 13-AUG-20 22:17:00 (MST-7)
Location: RHAME
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were reported by Emergency Management.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 13-AUG-20 22:36:00 to 13-AUG-20 22:38:00 (MST-7)
Location: BOWMAN ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 13-AUG-20 22:43:00 to 13-AUG-20 22:45:00 (MST-7)
Location: BUFFALO SPGS
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 13-AUG-20 23:17:00 to 13-AUG-20 23:19:00 (MST-7)
Location: NEW ENGLAND
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts were estimated by the public.

Hail in ADAMS, NORTH DAKOTA
From 13-AUG-20 23:40:00 to 13-AUG-20 23:43:00 (MST-7)
Location: HETTINGER ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 14-AUG-20 00:08:00 to 14-AUG-20 00:10:00 (MST-7)
Location: BENTLEY
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in ADAMS, NORTH DAKOTA
From 14-AUG-20 00:45:00 to 14-AUG-20 00:48:00 (MST-7)
Location: HETTINGER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, NORTH DAKOTA
From 14-AUG-20 02:30:00 to 14-AUG-20 02:32:00 (MST-7)
Location: HAYNES
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HETTINGER, NORTH DAKOTA
From 14-AUG-20 02:42:00 to 14-AUG-20 02:44:00 (MST-7)
Location: BENTLEY
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SIOUX, NORTH DAKOTA
From 14-AUG-20 03:58:00 to 14-AUG-20 04:03:00 (MST-7)
Location: CANNON BALL
Magnitude: 70.00 EG
Property damage: 24.00K
Crop damage: 0.00K
Reported by: Utility Company

Multiple power poles broke down in the area.

Hail in EMMONS, NORTH DAKOTA
From 14-AUG-20 04:05:00 to 14-AUG-20 04:08:00 (CST-6)
Location: KINTYRE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in LOGAN, NORTH DAKOTA
From 14-AUG-20 04:18:00 to 14-AUG-20 04:21:00 (CST-6)
Location: NAPOLEON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 14-AUG-20 04:48:00 to 14-AUG-20 04:53:00 (CST-6)
Location: BREIEN
Magnitude: 70.00 EG
Property damage: 45.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fifteen power poles were broken down.

Hail in LOGAN, NORTH DAKOTA
From 14-AUG-20 05:15:00 to 14-AUG-20 05:18:00 (CST-6)
Location: GACKLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STUTSMAN, NORTH DAKOTA
From 14-AUG-20 05:23:00 to 14-AUG-20 05:26:00 (CST-6)
Location: ELDRIDGE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STUTSMAN, NORTH DAKOTA
From 14-AUG-20 05:34:00 to 14-AUG-20 05:38:00 (CST-6)
Location: JAMESTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LOGAN, NORTH DAKOTA
From 14-AUG-20 05:55:00 to 14-AUG-20 05:59:00 (CST-6)
Location: NAPOLEON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in EMMONS, NORTH DAKOTA
From 14-AUG-20 05:20:00 to 14-AUG-20 05:23:00 (CST-6)
Location: HAZELTON ARPT
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 LA MOURE, NORTH DAKOTA
From 14-AUG-20 07:35:00 to 14-AUG-20 07:40:00 (CST-6)
Location: VERONA
Magnitude: 83.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Significant damage occurred to two farmsteads in close proximity to each other. Multiple pole barn sheds and grain bins were either severely damaged or destroyed. Shelterbelts were severely damaged, with multiple trees either broken or uprooted. Many pieces of farm equipment were also damaged.