An isolated supercell developed across south central South Dakota late evening along an advancing cold frontal boundary. With appreciable DCAPE and deep-layer effective shear, upscale growth occurred rapidly with the development of widespread damaging winds, which spread out of eastern South Dakota into Southwest Minnesota.

Thunderstorm Wind in MURRAY, MINNESOTA
From 16-SEP-21 23:45:00 to 16-SEP-21 23:47:00 (CST-6)
Location: LAKE WILSON
Magnitude: 61.00 EG
Crop damage: 2.00K
Reported by: Public

Strong thunderstorm wind gusts produced crop damage, downed several large branches and uprooted a large tree. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in JACKSON, MINNESOTA
From 17-SEP-21 00:40:00 to 17-SEP-21 00:42:00 (CST-6)
Location: LAKEFIELD
Magnitude: 61.00 EG
Crop damage: 4.00K
Reported by: Trained Spotter

Several trees were downed by strong thunderstorm wind gusts. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in MURRAY, MINNESOTA
From 16-SEP-21 23:52:00 to 16-SEP-21 23:54:00 (CST-6)
Location: LAKE WILSON
Magnitude: 56.00 EG
Property damage: 5.00K
Reported by: Emergency Manager

A hoop barn was damaged by thunderstorm wind gusts. Property damage costs are a rough estimate.

Thunderstorm Wind in COTTONWOOD, MINNESOTA
From 17-SEP-21 00:20:00 to 17-SEP-21 00:22:00 (CST-6)
Location: JEFFERS
Magnitude: 52.00 EG
Reported by: Public

Crops were blown over by strong thunderstorm wind gusts.

Thunderstorm Wind in ROCK, MINNESOTA
From 16-SEP-21 23:37:00 to 16-SEP-21 23:39:00 (CST-6)
Location: BEAVER CREEK
Magnitude: 51.00 MG
Crop damage: 22.00K
Reported by: Mesonet

Thunderstorm wind gusts were measured by Minnesota RWIS site MN006 located 1 mile west southwest of Beaver Creek. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in PIPESTONE, MINNESOTA
From 16-SEP-21 23:30:00 to 16-SEP-21 23:32:00 (CST-6)
Location: PIPESTONE
Magnitude: 52.00 MG
Crop damage: 3.00K
Reported by: RAWS

Thunderstorm winds were measured by the Redstone RAWS site RPPM5 1 miles north of Pipestone. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in MURRAY, MINNESOTA
From 16-SEP-21 23:48:00 to 16-SEP-21 23:50:00 (CST-6)
Location: CHANDLER
Magnitude: 70.00 EG
Property damage: 50.00K
Reported by: Emergency Manager

A hoop barn was destroyed by thunderstorm winds, along with doors and roof ripped off a machine shed. Property damage costs are a rough estimate.

Thunderstorm Wind in MURRAY, MINNESOTA
From 16-SEP-21 23:47:00 to 16-SEP-21 23:49:00 (CST-6)
Location: CHANDLER
Magnitude: 61.00 EG
Reported by: Emergency Manager

Thunderstorm winds uprooted and snapped several large trees.

Thunderstorm Wind in MURRAY, MINNESOTA
From 17-SEP-21 00:03:00 to 17-SEP-21 00:05:00 (CST-6)
Location: SLAYTON
Magnitude: 57.00 MG
Reported by: AWOS

Automated site KDVP 1 miles west of Slayton measured thunderstorm wind gusts.

Thunderstorm Wind in COTTONWOOD, MINNESOTA
From 17-SEP-21 00:47:00 to 17-SEP-21 00:49:00 (CST-6)
Location: MOUNTAIN LAKE
Magnitude: 52.00 EG
Reported by: Trained Spotter

Several 3 to 4 inch tree branches were downed by thunderstorm winds.