Thunderstorms formed along a cold front during the evening hours of July 23rd. These storms produced large hail, strong winds, and a few tornadoes.

Thunderstorm Wind in NORMAN, MINNESOTA
From 23-JUL-15 23:30:00 to 23-JUL-15 23:30:00 (CST-6)
Location: SHELLY
Magnitude: 55.00 EG
Reported by: Social Media

Roofs were damaged and trees were blown down.

Thunderstorm Wind in NORMAN, MINNESOTA
From 23-JUL-15 23:30:00 to 23-JUL-15 23:30:00 (CST-6)
Location: HADLER
Magnitude: 60.00 EG
Reported by: Public

A shed was damaged and numerous trees were blown down.

Thunderstorm Wind in POLK, MINNESOTA
From 23-JUL-15 23:40:00 to 23-JUL-15 23:40:00 (CST-6)
Location: MAPLE BAY
Magnitude: 60.00 EG
Reported by: Public

A boat lift was flipped over.

Thunderstorm Wind in MAHNOMEN, MINNESOTA
From 23-JUL-15 23:46:00 to 23-JUL-15 23:46:00 (CST-6)
Location: MAHNOMEN
Magnitude: 55.00 EG
Reported by: Law Enforcement

Trees and power lines were blown down.

Hail in BECKER, MINNESOTA
From 24-JUL-15 00:00:00 to 24-JUL-15 00:00:00 (CST-6)
Location: TAMARAC REFUGE
Magnitude: 1.00 
Reported by: COOP Observer

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 24-JUL-15 00:00:00 to 24-JUL-15 00:00:00 (CST-6)
Location: BAGLEY
Magnitude: 50.00 EG
Reported by: Public

Small tree limbs were blown down.

Thunderstorm Wind in MAHNOMEN, MINNESOTA
From 24-JUL-15 00:05:00 to 24-JUL-15 00:05:00 (CST-6)
Location: MAHNOMEN
Magnitude: 55.00 EG
Reported by: Law Enforcement

Several large trees were blown down.

Thunderstorm Wind in NORMAN, MINNESOTA
From 24-JUL-15 00:15:00 to 24-JUL-15 00:15:00 (CST-6)
Location: RANUM
Magnitude: 55.00 EG
Reported by: Law Enforcement

A small pine tree was blown down.

Thunderstorm Wind in BECKER, MINNESOTA
From 24-JUL-15 00:30:00 to 24-JUL-15 00:30:00 (CST-6)
Location: TWO INLETS
Magnitude: 60.00 EG
Reported by: Public

Several large trees were blown down.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 24-JUL-15 01:15:00 to 24-JUL-15 01:15:00 (CST-6)
Location: TENSTRIKE
Magnitude: 60.00 EG
Reported by: Public

Many pine trees were blown down.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 24-JUL-15 01:30:00 to 24-JUL-15 01:30:00 (CST-6)
Location: PENNINGTON
Magnitude: 60.00 EG
Reported by: Public

Four to five trees on the west side of Lake Pimushe were snapped ten feet above ground level.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 24-JUL-15 01:30:00 to 24-JUL-15 01:30:00 (CST-6)
Location: PENNINGTON
Magnitude: 55.00 EG
Reported by: Public

A tree was blown down near Moose Lake.

Tornado in NORMAN, MINNESOTA
From 23-JUL-15 23:46:00 to 23-JUL-15 23:51:00 (CST-6)
Location: SUNDAHL
Tornado F-scale: EF1
Reported by: NWS Storm Survey

The tornado occurred just south of the Polk County line, mainly along county road one, and was embedded in heavy rain and downburst winds. The tornado snapped numerous trees, caused minor damage to a storage building and house, and cracked a power pole. Peak winds were estimated at 110 mph.

Thunderstorm Wind in WADENA, MINNESOTA
From 24-JUL-15 01:00:00 to 24-JUL-15 01:00:00 (CST-6)
Location: MENAHGA
Magnitude: 55.00 EG
Reported by: Trained Spotter

Several six inch diameter tree branches were blown down around town.

Thunderstorm Wind in HUBBARD, MINNESOTA
From 24-JUL-15 01:05:00 to 24-JUL-15 01:05:00 (CST-6)
Location: HUBBARD
Magnitude: 60.00 EG
Reported by: Trained Spotter

Several eight to ten inch diameter trees were snapped.

Thunderstorm Wind in HUBBARD, MINNESOTA
From 24-JUL-15 01:22:00 to 24-JUL-15 01:22:00 (CST-6)
Location: AKELEY
Magnitude: 55.00 EG
Reported by: Public

Numerous six inch diameter tree branches were blown down.