The early morning hours of Friday, June 29th, remained warm and muggy. Just after midnight, temperatures were still in the 70s with dew points around 70. A line of thunderstorms moved into the Devils Lake area around 2 am CDT. This line of storms had several bowing segments, which are indicative of strong winds. The most obvious bowing segment between highway 2 and Interstate 94, where the most amount of damage occurred. The main bowing segment exited into north central Minnesota around 6 am CDT. Well behind the bowing thunderstorm complex, a mesoscale convective vortex (MCV) formed, and produced another round of widespread damaging winds.

Tornado in POLK, MINNESOTA
From 29-JUN-18 03:54:00 to 29-JUN-18 04:09:00 (CST-6)
Location: WINGER
Tornado F-scale: EF2
Property damage: 6.50M
Crop damage: 500.00K
Reported by: NWS Storm Survey

This tornado was likely wrapped in downburst winds and heavy rain for most of its path. It tracked nearly due east at about 60 mph, for at least 15 miles. It tore down trees in shelterbelts and tore roofing off of a couple of homes and farm buildings. It tore down 11 miles, or more than 50 high voltage towers, and snapped wooden power poles at cross roads along its path. Peak winds were estimated at 120 mph.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:42:00 to 29-JUN-18 04:42:00 (CST-6)
Location: BIRCHMONT
Magnitude: 65.00 EG
Reported by: Public

Several trees were blown down, some falling on a house and a driveway. The power was also knocked out.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 29-JUN-18 04:45:00 to 29-JUN-18 04:45:00 (CST-6)
Location: LAKE ITASCA
Magnitude: 65.00 EG
Reported by: Other Federal Agency

Tree damage was reported at Lake Itasca State Park.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:48:00 to 29-JUN-18 04:48:00 (CST-6)
Location: REDLAKE
Magnitude: 57.00 MG
Reported by: Public

The wind gust was measured by a personal weather station.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:50:00 to 29-JUN-18 04:50:00 (CST-6)
Location: NORTH POLE
Magnitude: 65.00 EG
Reported by: Social Media

Boxes and furniture were blown off a deck. The observer also measured 2.01 inches of rain.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:54:00 to 29-JUN-18 04:54:00 (CST-6)
Location: SHOOKS
Magnitude: 75.00 EG
Reported by: Emergency Manager

Dozens of trees were blown down across highway 72 in several locations between Kelliher and Blackduck. Powerlines were also knocked down.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:58:00 to 29-JUN-18 04:58:00 (CST-6)
Location: KELLIHER
Magnitude: 80.00 EG
Reported by: Law Enforcement

Aircraft were overturned at the Kelliher airport. Some of the aircraft were pushed onto highway 72.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 05:00:00 to 29-JUN-18 05:00:00 (CST-6)
Location: KELLIHER
Magnitude: 80.00 EG
Reported by: Emergency Manager

Extensive tree damage was reported.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 05:18:00 to 29-JUN-18 05:18:00 (CST-6)
Location: BLACKDUCK
Magnitude: 75.00 EG
Reported by: Public

Multiple trees were blown down between Blackduck and Kelliher.

Lightning in POLK, MINNESOTA
From 29-JUN-18 03:15:00 to 29-JUN-18 03:15:00 (CST-6)
Location: EAST GRAND FORKS
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

Lightning struck a tree, knocking down several branches.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:20:00 to 29-JUN-18 03:20:00 (CST-6)
Location: FREEMAN
Magnitude: 60.00 EG
Reported by: NWS Storm Survey

Large tree branches were blown down in most farmsteads and shelterbelts across eastern Fisher and western Lowell townships.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:21:00 to 29-JUN-18 03:21:00 (CST-6)
Location: EAST GRAND FORKS
Magnitude: 54.00 MG
Reported by: Public

The wind gust was measured by a personal weather station.

Thunderstorm Wind in NORMAN, MINNESOTA
From 29-JUN-18 03:25:00 to 29-JUN-18 03:25:00 (CST-6)
Location: HENDRUM
Magnitude: 65.00 EG
Reported by: Public

Several trees were blown down.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:26:00 to 29-JUN-18 03:26:00 (CST-6)
Location: KEY WEST
Magnitude: 83.00 EG
Reported by: Social Media

A power pole was cracked.

Thunderstorm Wind in NORMAN, MINNESOTA
From 29-JUN-18 03:27:00 to 29-JUN-18 03:27:00 (CST-6)
Location: HENDRUM
Magnitude: 61.00 MG
Reported by: Mesonet

The wind gust was measured by a MNDOT RWIS sensor.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:38:00 to 29-JUN-18 03:38:00 (CST-6)
Location: GENTILLY
Magnitude: 70.00 EG
Reported by: NWS Storm Survey

Metal roofing was torn off a hay shed. Large branches were also blown down.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:41:00 to 29-JUN-18 03:41:00 (CST-6)
Location: FERTILE ARPT
Magnitude: 70.00 EG
Reported by: NWS Storm Survey

Numerous large trees were snapped in shelterbelts and groves in southeast Onstad and western Garfield townships.

Thunderstorm Wind in CLAY, MINNESOTA
From 29-JUN-18 03:45:00 to 29-JUN-18 03:45:00 (CST-6)
Location: SABIN
Magnitude: 80.00 EG
Reported by: COOP Observer

Many large trees were blown down with roof damage reported.

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 03:31:00 to 29-JUN-18 03:31:00 (CST-6)
Location: CROOKSTON
Magnitude: 70.00 EG
Reported by: Social Media

Several large trees and a fence were blown down.

Thunderstorm Wind in PENNINGTON, MINNESOTA
From 29-JUN-18 03:45:00 to 29-JUN-18 03:45:00 (CST-6)
Location: (TVF)THIEF RVR FALLS
Magnitude: 65.00 EG
Reported by: Social Media

Trees and branches were blown down.

Thunderstorm Wind in CLAY, MINNESOTA
From 29-JUN-18 03:47:00 to 29-JUN-18 03:47:00 (CST-6)
Location: SABIN
Magnitude: 70.00 EG
Reported by: COOP Observer

Large trees were blown down and the power was out for several hours.

Thunderstorm Wind in CLAY, MINNESOTA
From 29-JUN-18 03:47:00 to 29-JUN-18 03:47:00 (CST-6)
Location: MOORHEAD ARPT
Magnitude: 70.00 EG
Reported by: Broadcast Media

A UPS trailer was overturned on Interstate 94.

Tornado in NORMAN, MINNESOTA
From 29-JUN-18 03:48:00 to 29-JUN-18 03:50:00 (CST-6)
Location: TWIN VLY
Tornado F-scale: EF1
Reported by: Emergency Manager

This tornado was likely wrapped in downburst winds and heavy rain. Large trees were broken down and flung in various directions, but mainly to the northeast and east. Metal roofing was torn off a shed. Peak winds were estimated at 90 mph.

Thunderstorm Wind in NORMAN, MINNESOTA
From 29-JUN-18 03:49:00 to 29-JUN-18 03:49:00 (CST-6)
Location: RANUM
Magnitude: 70.00 EG
Reported by: Trained Spotter

Siding was ripped off a church and many large tree branches were blown down.

Thunderstorm Wind in NORMAN, MINNESOTA
From 29-JUN-18 03:50:00 to 29-JUN-18 03:50:00 (CST-6)
Location: TWIN VLY
Magnitude: 70.00 EG
Reported by: Social Media

Two large trees were uprooted.

Tornado in POLK, MINNESOTA
From 29-JUN-18 03:56:00 to 29-JUN-18 03:59:00 (CST-6)
Location: ERSKINE
Tornado F-scale: EF1
Reported by: NWS Storm Survey

This tornado, which was partially wrapped in downburst winds and heavy rain, snapped various trees at a farmstead. After crossing highway 2 roughly two miles east-southeast of the highway 59 intersection, it blew in a large west facing overhead door on a shop and blew out the back wall. Peak winds were estimated at 100 mph.

Thunderstorm Wind in CLAY, MINNESOTA
From 29-JUN-18 03:59:00 to 29-JUN-18 03:59:00 (CST-6)
Location: STOCKWOOD
Magnitude: 50.00 EG
Reported by: Social Media

A large tree branch was blown down.

Thunderstorm Wind in RED LAKE, MINNESOTA
From 29-JUN-18 04:05:00 to 29-JUN-18 04:05:00 (CST-6)
Location: BROOKS
Magnitude: 56.00 MG
Reported by: Mesonet

The wind gust was measured by a MNDOT RWIS sensor.

Hail in RED LAKE, MINNESOTA
From 29-JUN-18 04:08:00 to 29-JUN-18 04:08:00 (CST-6)
Location: OKLEE
Magnitude: 1.00 
Reported by: Social Media

Thunderstorm Wind in POLK, MINNESOTA
From 29-JUN-18 04:10:00 to 29-JUN-18 04:10:00 (CST-6)
Location: FASSTON
Magnitude: 65.00 EG
Reported by: NWS Storm Survey

Tree and fence damage was reported in town. The power was knocked out before the storm hit town.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 29-JUN-18 04:20:00 to 29-JUN-18 04:20:00 (CST-6)
Location: BAGLEY
Magnitude: 70.00 EG
Reported by: Social Media

A four wheel utility wagon was flipped over by the strong wind.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 29-JUN-18 04:25:00 to 29-JUN-18 04:25:00 (CST-6)
Location: ZERKEL
Magnitude: 60.00 EG
Reported by: Public

A few large tree branches were blown down at a campground.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 29-JUN-18 04:29:00 to 29-JUN-18 04:29:00 (CST-6)
Location: GONVICK
Magnitude: 60.00 EG
Reported by: Public

Tree damage was reported at a farmstead. A wind sensor measured 55 mph winds before a power outage knocked it out.

Thunderstorm Wind in CLEARWATER, MINNESOTA
From 29-JUN-18 04:30:00 to 29-JUN-18 04:30:00 (CST-6)
Location: GONVICK
Magnitude: 65.00 EG
Reported by: Broadcast Media

Trees were snapped and uprooted.

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 29-JUN-18 04:40:00 to 29-JUN-18 04:40:00 (CST-6)
Location: SCRIBNER
Magnitude: 70.00 EG
Reported by: Emergency Manager

Numerous trees were blown down.