Severe Thunderstorm Watch number 413 was in effect during this event.
An eastward moving surface trough from far eastern Montana into western North Dakota, coupled with increasing large scale ascent associated with a mid level short wave impulse over southwest Saskatchewan, was the focus for scattered strong to severe thunderstorms over west and north central North Dakota during the late afternoon and evening hours. The thunderstorms produced large hail and severe thunderstorm wind gusts before dissipating around sunset.

Hail in MCKENZIE, NORTH DAKOTA
From 13-JUL-13 15:18:00 to 13-JUL-13 15:25:00 (MST-7)
Location: EAST FAIRVIEW
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WILLIAMS, NORTH DAKOTA
From 13-JUL-13 16:00:00 to 13-JUL-13 16:10:00 (CST-6)
Location: TRENTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCKENZIE, NORTH DAKOTA
From 13-JUL-13 15:48:00 to 13-JUL-13 15:54:00 (MST-7)
Location: WATFORD CITY
Magnitude: 3.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

There were no reports of damage with this very large hail report.

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 13-JUL-13 16:20:00 to 13-JUL-13 16:25:00 (MST-7)
Location: WATFORD CITY
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in DIVIDE, NORTH DAKOTA
From 13-JUL-13 16:32:00 to 13-JUL-13 16:37:00 (CST-6)
Location: FORTUNA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WILLIAMS, NORTH DAKOTA
From 13-JUL-13 16:45:00 to 13-JUL-13 16:51:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WILLIAMS, NORTH DAKOTA
From 13-JUL-13 16:50:00 to 13-JUL-13 16:55:00 (CST-6)
Location: (ISN)SLOULIN FLD WIL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain accompanied the strong winds.

Thunderstorm Wind in MCKENZIE, NORTH DAKOTA
From 13-JUL-13 16:52:00 to 13-JUL-13 16:58:00 (MST-7)
Location: GRASSY BUTTE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The strong winds resulted in broken tree branches.

Thunderstorm Wind in BURKE, NORTH DAKOTA
From 13-JUL-13 17:45:00 to 13-JUL-13 17:50:00 (CST-6)
Location: COTEAU
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BOTTINEAU, NORTH DAKOTA
From 13-JUL-13 18:19:00 to 13-JUL-13 18:25:00 (CST-6)
Location: ANTLER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The strong winds blew down small tree branches.

Thunderstorm Wind in BOTTINEAU, NORTH DAKOTA
From 13-JUL-13 18:19:00 to 13-JUL-13 18:25:00 (CST-6)
Location: ANTLER
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BOTTINEAU, NORTH DAKOTA
From 13-JUL-13 19:05:00 to 13-JUL-13 19:10:00 (CST-6)
Location: BOTTINEAU
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain accompanied the strong winds.

Thunderstorm Wind in ADAMS, NORTH DAKOTA
From 13-JUL-13 17:53:00 to 13-JUL-13 17:58:00 (MST-7)
Location: REEDER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm wind gust was observed.

Thunderstorm Wind in ROLETTE, NORTH DAKOTA
From 13-JUL-13 19:37:00 to 13-JUL-13 19:43:00 (CST-6)
Location: DUNSEITH
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain accompanied the strong winds.

Thunderstorm Wind in ROLETTE, NORTH DAKOTA
From 13-JUL-13 20:01:00 to 13-JUL-13 20:06:00 (CST-6)
Location: ROLLA
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Funnel Cloud in WILLIAMS, NORTH DAKOTA
From 13-JUL-13 15:55:00 to 13-JUL-13 15:56:00 (CST-6)
Location: WILLISTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief funnel cloud was observed.