A derecho developed in south central South Dakota and traveled northeast into western Minnesota. This thunderstorm complex generated 2 confirmed tornadoes across Big Stone and Traverse Counties, and produced a broad area of widespread and destructive straight-line winds in excess of 80 mph. Trees, buildings, power lines, grain bins, semi trucks, and other property was damaged or destroyed across west central Minnesota, and power outages lasted for multiple days in some cases.

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:51:00 to 12-MAY-22 17:51:00 (CST-6)
Location: ODESSA
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 18:04:00 to 12-MAY-22 18:04:00 (CST-6)
Location: ARTICHOKE
Magnitude: 70.00 MG
Reported by: Mesonet

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:35:00 to 12-MAY-22 17:40:00 (CST-6)
Location: ARTICHOKE
Magnitude: 78.00 ES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several uprooted and snapped trees on the property. A machine shed was leaning east and another barn leaning northeast. The house on the property was also leaning with a  several inch gap between the house and the chimney. The house was deemed unlivable.

Tornado in TRAVERSE, MINNESOTA
From 12-MAY-22 17:59:00 to 12-MAY-22 18:03:00 (CST-6)
Location: CHARLESVILLE
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A tornado developed 11 miles east of Wheaton along the leading
edge of a line severe thunderstorms. This tornado traveled
rapidly north-northeastward and impacted three farmsteads.
Several trees were uprooted and felled in different directions,
outbuildings were severely damaged, and both homes were damaged
as well including the partial removal of a garage roof. The
tornado continued northeast to right near the Grant County line,
and impacted another farmstead. Silo damage, trees felled in
different directions, and a small outbuilding was moved 10 yards
to the northwest.

Tornado in TRAVERSE, MINNESOTA
From 12-MAY-22 17:51:00 to 12-MAY-22 17:53:00 (CST-6)
Location: DUMONT
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A tornado developed 6 miles east of Dumont on the leading edge of
a line of severe thunderstorms, and then traveled quickly
northeast. An outbuilding took heavy damage, with debris strewn
northeast over half a mile. The majority of the 2x4 planks were
deposited directly to the east of the shed, while another single
2x4 was lodged into the ground at an angle not consistent with
straight-line winds. The tornado then destroyed several mostly
empty grain bins. Some tin from the property was thrown due west
into the trees.

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:40:00 to 12-MAY-22 17:40:00 (CST-6)
Location: ARTICHOKE
Magnitude: 70.00 EG
Reported by: Trained Spotter

Estimated 80 mph wind gusts dented a grain bin and uprooted trees.

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:32:00 to 12-MAY-22 17:32:00 (CST-6)
Location: ORTONVILLE
Magnitude: 52.00 MG
Reported by: Mesonet

Thunderstorm Wind in TRAVERSE, MINNESOTA
From 12-MAY-22 17:48:00 to 12-MAY-22 17:48:00 (CST-6)
Location: DUMONT
Magnitude: 61.00 EG
Reported by: Public

Shingles were pealed off a roof, and at least two large trees were snapped by estimated 70 mph wind gusts.

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:50:00 to 12-MAY-22 17:50:00 (CST-6)
Location: GRACEVILLE
Magnitude: 69.00 MG
Reported by: Mesonet

Thunderstorm Wind in TRAVERSE, MINNESOTA
From 12-MAY-22 18:10:00 to 12-MAY-22 18:10:00 (CST-6)
Location: WHEATON
Magnitude: 70.00 EG
Reported by: Public

Estimated 80 mph wind gusts uprooted and snapped trees, and blew a roof off of a residence.

Thunderstorm Wind in BIG STONE, MINNESOTA
From 12-MAY-22 17:48:00 to 12-MAY-22 17:48:00 (CST-6)
Location: GRACEVILLE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet