A line of thunderstorms began in western North Dakota early in the evening of June 28th and then swept into northern Minnesota during the early morning hours of the 29th. While there were a few hail reports, this line was primarily a damaging wind producer and featured a measured gust to 80 mph. Numerous trees were damaged by the storms and fell onto homes and power lines.The storms continued to produce strong winds over the open waters of Lake Superior, but weakened to the south as they moved into northwestern Wisconsin.

Thunderstorm Wind in ITASCA, MINNESOTA
From 29-JUN-18 05:59:00 to 29-JUN-18 05:59:00 (CST-6)
Location: BOVEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree fell onto a home and took down a power line.

Thunderstorm Wind in ITASCA, MINNESOTA
From 29-JUN-18 05:05:00 to 29-JUN-18 05:05:00 (CST-6)
Location: ALVWOOD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were blown down along CR 29 near Alvwood. One tree fell onto a cabin.

Thunderstorm Wind in ITASCA, MINNESOTA
From 29-JUN-18 05:20:00 to 29-JUN-18 05:20:00 (CST-6)
Location: INGER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple 15 inch diameter aspen trees were blown down along County Road 35 south of Oslund.

Thunderstorm Wind in ITASCA, MINNESOTA
From 29-JUN-18 05:31:00 to 29-JUN-18 05:31:00 (CST-6)
Location: MACK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree was knocked down onto a power line which then caught fire.

Thunderstorm Wind in ITASCA, MINNESOTA
From 29-JUN-18 06:05:00 to 29-JUN-18 06:05:00 (CST-6)
Location: KEEWATIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large, 3 inch diameter tree branch was blown down.

Hail in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:07:00 to 29-JUN-18 06:07:00 (CST-6)
Location: MOUNTAIN IRON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:08:00 to 29-JUN-18 06:08:00 (CST-6)
Location: HALEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several pine trees were ripped up at the roots and toppled near Elbow Lake.

Hail in ITASCA, MINNESOTA
From 29-JUN-18 06:09:00 to 29-JUN-18 06:09:00 (CST-6)
Location: BOVEY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:14:00 to 29-JUN-18 06:14:00 (CST-6)
Location: HIBBING
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees and power lines were blown down.

Hail in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:26:00 to 29-JUN-18 06:26:00 (CST-6)
Location: NORTH MITCHELL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:18:00 to 29-JUN-18 06:18:00 (CST-6)
Location: COOK MUNI ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The wind gust was measured by the AWOS station at the Cook Airport.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:34:00 to 29-JUN-18 06:34:00 (CST-6)
Location: IRON JCT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A 20 inch diameter tree was snapped by thunderstorm winds on Kapla Lake Road.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:35:00 to 29-JUN-18 06:35:00 (CST-6)
Location: EVELETH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees and power lines were blown down.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:38:00 to 29-JUN-18 06:38:00 (CST-6)
Location: ELY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees and power lines were blown down in the Ely area and created power outages.

Thunderstorm Wind in LAKE, MINNESOTA
From 29-JUN-18 06:55:00 to 29-JUN-18 06:55:00 (CST-6)
Location: FOREST CENTER
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The wind was measured by a personal weather station on Moose Lake Road.

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 07:04:00 to 29-JUN-18 07:04:00 (CST-6)
Location: (ELO)ELY MUNI ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The wind gust was measured by station ELOM5.

Thunderstorm Wind in COOK, MINNESOTA
From 29-JUN-18 07:45:00 to 29-JUN-18 07:45:00 (CST-6)
Location: SCHROEDER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A large tree was blown down near the intersection of Highway 61 and Temperance Road.

Hail in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:29:00 to 29-JUN-18 06:29:00 (CST-6)
Location: EMBARRASS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 29-JUN-18 06:42:00 to 29-JUN-18 06:42:00 (CST-6)
Location: BABBITT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A 20 inch diameter tree was toppled and power lines were knocked down.

Hail in ITASCA, MINNESOTA
From 29-JUN-18 05:39:00 to 29-JUN-18 05:39:00 (CST-6)
Location: BIGFORK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter