Severe thunderstorms developed across portions of northeast Minnesota the evening of  the 21st of September and continued across the region into the early morning hours of the 22nd. Several large trees were knocked down along with nearby powerlines. A cupola was blown off of a bar and hail as large as an inch fell.

Thunderstorm Wind in CASS, MINNESOTA
From 22-SEP-17 05:06:00 to 22-SEP-17 05:06:00 (CST-6)
Location: REMER MUNI ARPT
Magnitude: 52.00 EG
Reported by: State Official

A few blown down trees were blocking the road.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 06:14:00 to 22-SEP-17 06:14:00 (CST-6)
Location: ARNOLD
Magnitude: 50.00 EG
Reported by: State Official

Trees and power lines were blown down.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 06:00:00 to 22-SEP-17 06:00:00 (CST-6)
Location: BAYVIEW
Magnitude: 50.00 EG
Reported by: Public

Trees and power lines were blown down.

Thunderstorm Wind in ITASCA, MINNESOTA
From 22-SEP-17 02:25:00 to 22-SEP-17 02:25:00 (CST-6)
Location: BLACKBERRY
Magnitude: 56.00 EG
Reported by: Trained Spotter

A barn was damaged by severe thunderstorms winds that blew off its cupola and stripped its siding.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 05:55:00 to 22-SEP-17 05:55:00 (CST-6)
Location: ALBORN
Magnitude: 52.00 EG
Reported by: State Official

Multiple trees were knocked down onto nearby power lines.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 05:36:00 to 22-SEP-17 05:36:00 (CST-6)
Location: GOWAN
Magnitude: 52.00 EG
Reported by: State Official

A few trees were knocked down onto nearby power lines.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 06:13:00 to 22-SEP-17 06:13:00 (CST-6)
Location: (DLH)DULUTH INTL ARP
Magnitude: 53.00 MG
Reported by: ASOS

The wind speed was recorded by the ASOS station at the Duluth International Airport.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 22-SEP-17 06:02:00 to 22-SEP-17 06:02:00 (CST-6)
Location: HERMANTOWN
Magnitude: 50.00 EG
Reported by: NWS Employee

A 9 diameter healthy poplar tree was blown down.

Thunderstorm Wind in COOK, MINNESOTA
From 22-SEP-17 07:47:00 to 22-SEP-17 07:47:00 (CST-6)
Location: MARAIS
Magnitude: 50.00 EG
Reported by: Law Enforcement

A few trees were blown down along Minnesota Highway 61 by mile marker 100.

Hail in PINE, MINNESOTA
From 22-SEP-17 05:15:00 to 22-SEP-17 05:15:00 (CST-6)
Location: ELLSON
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in CARLTON, MINNESOTA
From 22-SEP-17 05:12:00 to 22-SEP-17 05:12:00 (CST-6)
Location: KETTLE RIVER
Magnitude: 50.00 EG
Reported by: Law Enforcement

A few trees were knocked along Minnesota Highway 73 west of Moose Lake.

Thunderstorm Wind in CARLTON, MINNESOTA
From 22-SEP-17 05:08:00 to 22-SEP-17 05:08:00 (CST-6)
Location: KETTLE RIVER
Magnitude: 50.00 EG
Reported by: Public

Four trees were knocked down.

Thunderstorm Wind in AITKIN, MINNESOTA
From 22-SEP-17 05:03:00 to 22-SEP-17 05:03:00 (CST-6)
Location: GIESE
Magnitude: 52.00 EG
Reported by: State Official

A few trees were knocked down along Minnesota Highway 18 between McGrath and Finlayson.

Thunderstorm Wind in CROW WING, MINNESOTA
From 22-SEP-17 04:33:00 to 22-SEP-17 04:33:00 (CST-6)
Location: CROSS LAKE
Magnitude: 52.00 EG
Reported by: State Official

Multiple trees were knocked down along with nearby power lines.

Hail in CROW WING, MINNESOTA
From 22-SEP-17 04:20:00 to 22-SEP-17 04:20:00 (CST-6)
Location: FT RIPLEY
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in CASS, MINNESOTA
From 22-SEP-17 04:20:00 to 22-SEP-17 04:20:00 (CST-6)
Location: OSNAWA
Magnitude: 50.00 EG
Reported by: State Official

A few trees were knocked down blocking Minnesota Highway 87 west of Backus.

Thunderstorm Wind in CROW WING, MINNESOTA
From 22-SEP-17 04:07:00 to 22-SEP-17 04:07:00 (CST-6)
Location: GARRISON
Magnitude: 50.00 EG
Reported by: State Official

A few trees were knocked down and partially blocking Minnesota Highway 169.

Thunderstorm Wind in CROW WING, MINNESOTA
From 22-SEP-17 03:56:00 to 22-SEP-17 03:56:00 (CST-6)
Location: BRAINERD
Magnitude: 52.00 EG
Reported by: State Official

A few trees were knocked down within the city with widespread tree damage across portions of Crow Wing County.

Thunderstorm Wind in ITASCA, MINNESOTA
From 22-SEP-17 02:21:00 to 22-SEP-17 02:21:00 (CST-6)
Location: BLACKBERRY
Magnitude: 50.00 EG
Reported by: Public

Several large tree branches were knocked down.