An area of surface low pressure near Bismarck (ND) on the morning of the 11th moved to near Grand Forks (ND) by early afternoon, then moved to near Winnipeg in the evening. As it did so, a warm front lifted north ahead of the low and a cold front trailed behind the low. Thunderstorms formed along both boundaries.

Funnel Cloud in NORMAN, MINNESOTA
From 11-JUL-08 14:10:00 to 11-JUL-08 14:10:00 (CST-6)
Location: TWIN VLY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple funnel cloud reports were received by the Norman County dispatch office.

Tornado in MARSHALL, MINNESOTA
From 11-JUL-08 14:25:00 to 11-JUL-08 14:25:00 (CST-6)
Location: VIKING
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief touchdown was noted in an open field.

Funnel Cloud in BECKER, MINNESOTA
From 11-JUL-08 15:05:00 to 11-JUL-08 15:11:00 (CST-6)
Location: FRAZEE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A funnel cloud was observed passing over Frazee and continuing to the east-northeast of town.

Funnel Cloud in OTTER TAIL, MINNESOTA
From 11-JUL-08 15:26:00 to 11-JUL-08 15:26:00 (CST-6)
Location: BUTLER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ROSEAU, MINNESOTA
From 11-JUL-08 15:40:00 to 11-JUL-08 15:50:00 (CST-6)
Location: SWIFT
Magnitude: 1.00 
Property damage: 5.00K
Crop damage: 50.00K
Reported by: Trained Spotter

Several large tree branches were also blown down.

Tornado in OTTER TAIL, MINNESOTA
From 11-JUL-08 15:15:00 to 11-JUL-08 15:19:00 (CST-6)
Location: LUCE
Tornado F-scale: EF1
Property damage: 200.00K
Crop damage: 100.00K
Reported by: COOP Observer

Irrigation system center pivots, trees, and power poles were heavily damaged in a roughly 2 mile path to about 7 miles north-northwest of Perham. A metal grain bin was blown down along with a small silo and several smaller farm buildings. Peak winds were estimated at around 105 mph.

Thunderstorm Wind in MARSHALL, MINNESOTA
From 11-JUL-08 15:15:00 to 11-JUL-08 15:15:00 (CST-6)
Location: GATZKE
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 50.00K
Reported by: Public

Several large tree branches were blown down along with heavy rain and pea sized hail.

Hail in BECKER, MINNESOTA
From 11-JUL-08 15:25:00 to 11-JUL-08 15:25:00 (CST-6)
Location: WOLF LAKE
Magnitude: 1.50 
Property damage: 20.00K
Crop damage: 200.00K
Reported by: Law Enforcement

Tornado in OTTER TAIL, MINNESOTA
From 11-JUL-08 15:43:00 to 11-JUL-08 15:45:00 (CST-6)
Location: LYMAN
Tornado F-scale: EF1
Property damage: 40.00K
Crop damage: 20.00K
Reported by: Trained Spotter

Several large trees were snapped off or blown over along a roughly one mile path.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 11-JUL-08 17:00:00 to 11-JUL-08 17:00:00 (CST-6)
Location: LAVINIA
Magnitude: 60.00 EG
Property damage: 40.00K
Crop damage: 20.00K
Reported by: Law Enforcement

Trees were blown onto power lines and a boat was flipped on Lake Andrusia.

Tornado in OTTER TAIL, MINNESOTA
From 11-JUL-08 14:55:00 to 11-JUL-08 14:55:00 (CST-6)
Location: VERGAS
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 5.00K
Reported by: Storm Chaser

A brief touchdown was observed between Rose Lake and Scalp Lake.

Thunderstorm Wind in LAKE OF THE WOODS, MINNESOTA
From 11-JUL-08 07:10:00 to 11-JUL-08 07:10:00 (CST-6)
Location: (BDE)BAUDETTE INTL A
Magnitude: 50.00 EG
Property damage: 20.00K
Reported by: ASOS

The wind gust was measured by the Baudette Airport ASOS.

Thunderstorm Wind in LAKE OF THE WOODS, MINNESOTA
From 11-JUL-08 07:40:00 to 11-JUL-08 07:40:00 (CST-6)
Location: BAUDETTE AFS
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 10.00K
Reported by: Emergency Manager

A large diameter pine tree was snapped off near the ground.

Tornado in MAHNOMEN, MINNESOTA
From 11-JUL-08 14:45:00 to 11-JUL-08 14:49:00 (CST-6)
Location: WAUBUN
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 5.00K
Reported by: Law Enforcement

This tornado was observed moving across highway 59 and lifting about 4 miles north-northeast of Waubun. The tornado appeared to pass just south of the Mahnomen County airport.

Tornado in BECKER, MINNESOTA
From 11-JUL-08 15:12:00 to 11-JUL-08 15:27:00 (CST-6)
Location: FRAZEE
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 20.00K
Reported by: Trained Spotter

This tornado touched down intermittently along a roughly 10 mile track to about 3 miles west-northwest of Wolf Lake. Several large trees were blown over or snapped off at points along the track. Peak winds were estimated at 80 mph.

Hail in BECKER, MINNESOTA
From 11-JUL-08 14:52:00 to 11-JUL-08 14:52:00 (CST-6)
Location: FRAZEE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in BECKER, MINNESOTA
From 11-JUL-08 14:53:00 to 11-JUL-08 14:53:00 (CST-6)
Location: FRAZEE
Magnitude: 0.75 
Reported by: Fire Department/Rescue

Hail in BECKER, MINNESOTA
From 11-JUL-08 15:20:00 to 11-JUL-08 15:20:00 (CST-6)
Location: EVERGREEN
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in OTTER TAIL, MINNESOTA
From 11-JUL-08 15:50:00 to 11-JUL-08 15:50:00 (CST-6)
Location: LYMAN
Magnitude: 0.75 
Reported by: Public

Hail in WADENA, MINNESOTA
From 11-JUL-08 16:02:00 to 11-JUL-08 16:02:00 (CST-6)
Location: MENAHGA
Magnitude: 1.00 
Reported by: Public

Hail in BELTRAMI, MINNESOTA
From 11-JUL-08 16:20:00 to 11-JUL-08 17:20:00 (CST-6)
Location: CARMEL
Magnitude: 0.75 
Reported by: Public

Hail in OTTER TAIL, MINNESOTA
From 11-JUL-08 16:21:00 to 11-JUL-08 16:21:00 (CST-6)
Location: NEW YORK MILLS
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in ROSEAU, MINNESOTA
From 11-JUL-08 06:10:00 to 11-JUL-08 06:10:00 (CST-6)
Location: WARROAD
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in MARSHALL, MINNESOTA
From 11-JUL-08 14:35:00 to 11-JUL-08 14:35:00 (CST-6)
Location: STRANDQUIST
Magnitude: 1.00 
Reported by: Public

Hail in POLK, MINNESOTA
From 11-JUL-08 15:15:00 to 11-JUL-08 15:19:00 (CST-6)
Location: LENGBY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LAKE OF THE WOODS, MINNESOTA
From 11-JUL-08 07:39:00 to 11-JUL-08 07:39:00 (CST-6)
Location: BAUDETTE AFS
Magnitude: 0.75 
Reported by: Trained Spotter

Lots of dime to penny size hail fell.

Hail in MARSHALL, MINNESOTA
From 11-JUL-08 08:30:00 to 11-JUL-08 08:30:00 (CST-6)
Location: ROSEWOOD
Magnitude: 0.75 
Reported by: Public

Hail in POLK, MINNESOTA
From 11-JUL-08 14:10:00 to 11-JUL-08 14:10:00 (CST-6)
Location: FERTILE
Magnitude: 0.88 
Reported by: Public

Hail in BECKER, MINNESOTA
From 11-JUL-08 14:49:00 to 11-JUL-08 14:49:00 (CST-6)
Location: DETROIT LAKES
Magnitude: 0.88 
Reported by: Trained Spotter

Tornado in MAHNOMEN, MINNESOTA
From 11-JUL-08 15:00:00 to 11-JUL-08 15:27:00 (CST-6)
Location: BEAULIEU
Tornado F-scale: EF2
Property damage: 500.00K
Crop damage: 100.00K
Reported by: Law Enforcement

This tornado tracked to the north-northeast for about 16 miles and lifted about 3 miles south-southwest of Lengby, or near Sugar Bowl Lake. Numerous trees and power poles were snapped along the path. Farm sheds were blown down and hay wagons flipped. The damage path was around 250 yards wide where it crossed county road 122 about 2 miles east of Beaulieu. Peak winds were estimated at 115 mph.