A series of severe thunderstorms moved across portions of northeast Minnesota. The storms caused very gusty winds that led to numerous reports of blown down trees blocking roads and bringing down nearby power lines. A few buildings were also damaged by downed trees. Severe hail was also reported. Preliminary damage estimates across Cass County were at $64,000 which included $45,000 damage sustained by Crow Wing Power, city of Lake Shore with $10,000, Loon Lake Township at $5,000 and Fairview Township at $4,000.  Minnesota Governor Mark Dayton authorized $351,000 to both Cass and Crow Wing Counties for recovery efforts.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:31:00 to 20-SEP-17 00:31:00 (CST-6)
Location: BAXTER
Magnitude: 56.00 EG
Reported by: NWS Employee

Several pine and oak trees with diameters larger than twelve inches were knocked down along Minnesota Highway 210 two miles west of the intersection with Minnesota 371. An oak tree also fell across a home on the south end of White Sand lake.

Thunderstorm Wind in CASS, MINNESOTA
From 20-SEP-17 00:35:00 to 20-SEP-17 00:35:00 (CST-6)
Location: LAKE SHR
Magnitude: 52.00 EG
Reported by: State Official

Several trees were knocked down along the lake shore area.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:37:00 to 20-SEP-17 00:37:00 (CST-6)
Location: (P39)PEQUOT LAKES
Magnitude: 52.00 EG
Reported by: Emergency Manager

Multiple trees were knocked down along with nearby power lines.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:38:00 to 20-SEP-17 00:38:00 (CST-6)
Location: NISSWA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Multiple trees were blown down. The largest tree was 20 inches in diameter.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:39:00 to 20-SEP-17 00:39:00 (CST-6)
Location: JENKINS
Magnitude: 50.00 EG
Reported by: Emergency Manager

Multiple trees were knocked down on County Road 145.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:42:00 to 20-SEP-17 00:42:00 (CST-6)
Location: PEQUOT LAKES ARPT
Magnitude: 50.00 EG
Reported by: Emergency Manager

Multiple trees were knocked down along with nearby power lines.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:43:00 to 20-SEP-17 00:43:00 (CST-6)
Location: JENKINS
Magnitude: 50.00 MG
Reported by: Mesonet

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:45:00 to 20-SEP-17 00:45:00 (CST-6)
Location: CROSS LAKE
Magnitude: 50.00 EG
Reported by: Emergency Manager

Multiple trees were knocked down along with nearby power lines.

Thunderstorm Wind in CROW WING, MINNESOTA
From 20-SEP-17 00:48:00 to 20-SEP-17 00:48:00 (CST-6)
Location: MANHATTAN BEACH
Magnitude: 50.00 EG
Reported by: Emergency Manager

Multiple trees were knocked down along with nearby powers lines.

Thunderstorm Wind in CASS, MINNESOTA
From 20-SEP-17 00:52:00 to 20-SEP-17 00:52:00 (CST-6)
Location: INGUADONA
Magnitude: 52.00 EG
Reported by: State Official

Multiple trees were knocked down on County Road 7 in Trelipe Township.

Hail in CROW WING, MINNESOTA
From 20-SEP-17 00:53:00 to 20-SEP-17 00:58:00 (CST-6)
Location: PINE CENTER
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in CASS, MINNESOTA
From 20-SEP-17 00:56:00 to 20-SEP-17 00:56:00 (CST-6)
Location: BREVIK
Magnitude: 52.00 EG
Reported by: State Official

Multiple trees were knocked down on County Road 8 in Boy Lake Township.

Thunderstorm Wind in CASS, MINNESOTA
From 20-SEP-17 01:00:00 to 20-SEP-17 01:00:00 (CST-6)
Location: BOY RIVER
Magnitude: 52.00 EG
Reported by: State Official

Multiple trees were knocked down on County Road 63 in Boy River Township.

Thunderstorm Wind in CASS, MINNESOTA
From 20-SEP-17 01:03:00 to 20-SEP-17 01:03:00 (CST-6)
Location: BENA
Magnitude: 50.00 EG
Reported by: State Official

Multiple trees were knocked down.

Thunderstorm Wind in AITKIN, MINNESOTA
From 20-SEP-17 01:15:00 to 20-SEP-17 01:15:00 (CST-6)
Location: MALMO
Magnitude: 56.00 EG
Reported by: Public

Several trees were uprooted. A large tree branch landed on a car.

Thunderstorm Wind in ITASCA, MINNESOTA
From 20-SEP-17 01:24:00 to 20-SEP-17 01:24:00 (CST-6)
Location: MARCELL
Magnitude: 52.00 EG
Reported by: State Official

Several trees were knocked down along Minnesota 38.

Thunderstorm Wind in ITASCA, MINNESOTA
From 20-SEP-17 01:31:00 to 20-SEP-17 01:31:00 (CST-6)
Location: BENNETT
Magnitude: 52.00 EG
Reported by: Public

Several trees were knocked down along Minnesota State Highway 65 near Buck Lake.

Thunderstorm Wind in PINE, MINNESOTA
From 20-SEP-17 01:35:00 to 20-SEP-17 01:35:00 (CST-6)
Location: ELLSON
Magnitude: 50.00 EG
Reported by: State Official

A few trees were knocked down along County Road 41 near Willow River.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 01:42:00 to 20-SEP-17 01:42:00 (CST-6)
Location: HIBBING
Magnitude: 56.00 EG
Reported by: Public

Several large trees were knocked down with some falling onto a house, damaging its chimney and siding.

Thunderstorm Wind in CARLTON, MINNESOTA
From 20-SEP-17 01:43:00 to 20-SEP-17 01:43:00 (CST-6)
Location: KETTLE RIVER
Magnitude: 52.00 EG
Reported by: Trained Spotter

A few trees measuring 10 inches in diameter were knocked down along Minnesota 27 by the intersection with Minnesota 73.

Thunderstorm Wind in CARLTON, MINNESOTA
From 20-SEP-17 02:03:00 to 20-SEP-17 02:03:00 (CST-6)
Location: CLOQUET
Magnitude: 52.00 EG
Reported by: NWS Employee

A 12 to 18 inch diameter tree branch was knocked down partially blocking Grant Avenue.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 02:06:00 to 20-SEP-17 02:06:00 (CST-6)
Location: SPRUCE
Magnitude: 52.00 EG
Reported by: State Official

Several trees were knocked down blocking Old Mesabi Road in Clinton Township.

Hail in PINE, MINNESOTA
From 20-SEP-17 02:08:00 to 20-SEP-17 02:08:00 (CST-6)
Location: STURGEON LAKE
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 02:22:00 to 20-SEP-17 02:22:00 (CST-6)
Location: JONES
Magnitude: 50.00 EG
Reported by: State Official

A tree was knocked down blocking the crossing of Eshquaguma Country Road and Vermilion Trail.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 02:22:00 to 20-SEP-17 02:22:00 (CST-6)
Location: DULUTH HGTS
Magnitude: 52.00 EG
Reported by: NWS Employee

A few tree branches measuring 5 to 6 inches in diameter were knocked down.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 02:24:00 to 20-SEP-17 02:24:00 (CST-6)
Location: SOUDAN
Magnitude: 52.00 EG
Reported by: State Official

A tree was knocked down blocking Minnesota 169 in Breitung Township.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 20-SEP-17 02:42:00 to 20-SEP-17 02:42:00 (CST-6)
Location: BABBITT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree was knocked down blocking the roadway at Highway 21 and Shaver Road.