After some thunderstorms rolled through the U. S. Highway 2 corridor during the evening of the 11th and early morning hours of the 12th, conditions set up for a larger outbreak of severe weather on the afternoon of the 12th. Afternoon temperatures along the Red River Valley into portions of west central Minnesota topped out in the lower 90s with dew points in the low to mid 70s. A stationary boundary set up from northeast North Dakota into west central Minnesota and upper level winds were very favorable to sustain storms. Numerous thunderstorms formed during the late afternoon and evening which produced large hail, tornadoes, and funnel clouds.

Funnel Cloud in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:30:00 to 12-JUL-15 15:37:00 (CST-6)
Location: (GFK)GRAND FORKS INT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A funnel cloud passed over the Grand Forks International Airport.

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:25:00 to 12-JUL-15 15:25:00 (CST-6)
Location: THOMPSON
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:37:00 to 12-JUL-15 15:37:00 (CST-6)
Location: MERRIFIELD
Magnitude: 1.00 
Reported by: Trained Spotter

The hail fell at the intersection of Interstate 29 and 32nd avenue south in Grand Forks.

Funnel Cloud in WALSH, NORTH DAKOTA
From 12-JUL-15 16:29:00 to 12-JUL-15 16:29:00 (CST-6)
Location: ARDOCH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Funnel Cloud in CASS, NORTH DAKOTA
From 12-JUL-15 17:27:00 to 12-JUL-15 17:27:00 (CST-6)
Location: HICKSON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WALSH, NORTH DAKOTA
From 12-JUL-15 16:45:00 to 12-JUL-15 16:45:00 (CST-6)
Location: GRAFTON ARPT
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 12-JUL-15 19:30:00 to 12-JUL-15 19:30:00 (CST-6)
Location: LEEDS
Magnitude: 50.00 EG
Reported by: Public

The strong winds blew down large branches and caused minor crop damage.

Hail in EDDY, NORTH DAKOTA
From 12-JUL-15 20:22:00 to 12-JUL-15 20:22:00 (CST-6)
Location: NEW ROCKFORD
Magnitude: 1.00 
Reported by: Public

Nickel to quarter sized hail fell.

Hail in BENSON, NORTH DAKOTA
From 12-JUL-15 19:30:00 to 12-JUL-15 19:30:00 (CST-6)
Location: LEEDS
Magnitude: 0.75 
Reported by: Public

Hail in BARNES, NORTH DAKOTA
From 12-JUL-15 22:24:00 to 12-JUL-15 22:24:00 (CST-6)
Location: ROGERS
Magnitude: 1.00 
Reported by: Social Media

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:00:00 to 12-JUL-15 15:00:00 (CST-6)
Location: OJATA
Magnitude: 1.25 
Reported by: Public

Tornado in TRAILL, NORTH DAKOTA
From 12-JUL-15 15:07:00 to 12-JUL-15 15:07:00 (CST-6)
Location: PORTLAND JCT
Tornado F-scale: EF0
Reported by: Law Enforcement

A brief touchdown was noted in an open field. The persistent wall cloud was visible for nearly 15 minutes and had tracked northeastward from the Mayville area. A rope funnel was evident at times and eventually it made brief contract with the ground. Peak winds were estimated at 75 mph.

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:19:00 to 12-JUL-15 15:19:00 (CST-6)
Location: (GFK)GRAND FORKS INT
Magnitude: 0.75 
Reported by: Public

The hail fell at the Grand Forks International Airport.

Funnel Cloud in TRAILL, NORTH DAKOTA
From 12-JUL-15 14:35:00 to 12-JUL-15 14:35:00 (CST-6)
Location: HATTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Funnel Cloud in TRAILL, NORTH DAKOTA
From 12-JUL-15 14:55:00 to 12-JUL-15 14:55:00 (CST-6)
Location: MAYVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The funnel cloud was viewed from six miles west of Buxton.

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:09:00 to 12-JUL-15 15:09:00 (CST-6)
Location: MERRIFIELD
Magnitude: 0.75 
Reported by: Amateur Radio

The hail fell near Merrifield.

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:05:00 to 12-JUL-15 15:05:00 (CST-6)
Location: NORTHWOOD
Magnitude: 0.75 
Reported by: Trained Spotter

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 12-JUL-15 15:20:00 to 12-JUL-15 15:20:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 52.00 EG
Reported by: Public

Several four to six inch diameter tree branches were blown down at a farmstead.

Hail in NELSON, NORTH DAKOTA
From 12-JUL-15 15:20:00 to 12-JUL-15 15:20:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 0.88 
Reported by: Public

Dime to nickel sized hail fell near Michigan.

Tornado in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:35:00 to 12-JUL-15 15:35:00 (CST-6)
Location: (GFK)GRAND FORKS INT
Tornado F-scale: EF0
Reported by: Other Federal Agency

A brief touchdown was noted in an open field about two miles northeast of the Grand Forks International Airport. Peak winds were estimated at 75 mph.

Hail in NELSON, NORTH DAKOTA
From 12-JUL-15 15:13:00 to 12-JUL-15 15:13:00 (CST-6)
Location: LAKOTA
Magnitude: 1.00 
Reported by: Public

Some crop damage was reported.

Funnel Cloud in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:15:00 to 12-JUL-15 15:15:00 (CST-6)
Location: GRAND FORKS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A persistent wall cloud with funnel were viewed from the National Weather Service office. These features passed to the south of the office.

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:19:00 to 12-JUL-15 15:19:00 (CST-6)
Location: GRAND FORKS
Magnitude: 0.75 
Reported by: Amateur Radio

The hail fell near Altru Hospital.

Hail in CASS, NORTH DAKOTA
From 12-JUL-15 17:47:00 to 12-JUL-15 17:47:00 (CST-6)
Location: FARGO
Magnitude: 1.25 
Reported by: Public

The hail fell at the Oxbow Country Club.

Hail in RAMSEY, NORTH DAKOTA
From 12-JUL-15 14:15:00 to 12-JUL-15 14:15:00 (CST-6)
Location: BROCKET
Magnitude: 1.00 
Reported by: Public

Hail in GRAND FORKS, NORTH DAKOTA
From 12-JUL-15 15:14:00 to 12-JUL-15 15:14:00 (CST-6)
Location: POWELL
Magnitude: 1.00 
Reported by: Public

Funnel Cloud in RICHLAND, NORTH DAKOTA
From 12-JUL-15 17:53:00 to 12-JUL-15 17:53:00 (CST-6)
Location: LITHIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

The funnel cloud was viewed from Comstock.