A cold front-induced early morning squall line swept across all of central and northeastern South Dakota on June 11th, leading to several reports of wind damage and a couple reports of quarter sized hail. The most intense winds caused structural damage to many machine sheds, barns, and other outbuildings.

Hail in EDMUNDS, SOUTH DAKOTA
From 11-JUN-21 01:57:00 to 11-JUN-21 01:57:00 (CST-6)
Location: GRETNA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in POTTER, SOUTH DAKOTA
From 11-JUN-21 02:03:00 to 11-JUN-21 02:03:00 (CST-6)
Location: TOLSTOY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROWN, SOUTH DAKOTA
From 11-JUN-21 03:20:00 to 11-JUN-21 03:20:00 (CST-6)
Location: CLAREMONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 11-JUN-21 01:30:00 to 11-JUN-21 01:30:00 (CST-6)
Location: ARTAS
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated 80 mph wind gusts completely destroyed a pole barn, uprooted trees, and spread debris a quarter to half mile to the northeast.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 10-JUN-21 22:04:00 to 10-JUN-21 22:04:00 (MST-7)
Location: BULLHEAD
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 11-JUN-21 02:24:00 to 11-JUN-21 02:24:00 (CST-6)
Location: WINSHIP
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 11-JUN-21 02:34:00 to 11-JUN-21 02:34:00 (CST-6)
Location: MILLER
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 11-JUN-21 03:28:00 to 11-JUN-21 03:28:00 (CST-6)
Location: CRANDALL
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CODINGTON, SOUTH DAKOTA
From 11-JUN-21 04:28:00 to 11-JUN-21 04:28:00 (CST-6)
Location: (ATY)WATERTOWN ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 11-JUN-21 04:24:00 to 11-JUN-21 04:24:00 (CST-6)
Location: WILMOT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAMLIN, SOUTH DAKOTA
From 11-JUN-21 04:34:00 to 11-JUN-21 04:34:00 (CST-6)
Location: BRYANT
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 11-JUN-21 02:40:00 to 11-JUN-21 02:40:00 (CST-6)
Location: WESTPORT
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 11-JUN-21 01:40:00 to 11-JUN-21 01:40:00 (CST-6)
Location: ARTAS
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated 80 mph winds completely destroyed a barn, took the roof off a shed along with the metal top off a silo and removed several cinder blocks. A board was also tossed through the roof of a garage.

Thunderstorm Wind in MCPHERSON, SOUTH DAKOTA
From 11-JUN-21 01:46:00 to 11-JUN-21 01:46:00 (CST-6)
Location: HILLSVIEW
Magnitude: 60.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated 70 mph winds took all or part of the roofs off of several sheds along with tipping over a grain bin auger.

Thunderstorm Wind in MCPHERSON, SOUTH DAKOTA
From 11-JUN-21 02:10:00 to 11-JUN-21 02:10:00 (CST-6)
Location: LEOLA
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Newspaper

Estimated 80 mph winds caused damage along the south side of Leola including an unroofed barn, tipped grain bins, downed tree branches, tipped camper, and destroyed pole barn. Debris was sent flying into the home of a local resident with no injuries reported.

Thunderstorm Wind in MCPHERSON, SOUTH DAKOTA
From 11-JUN-21 02:15:00 to 11-JUN-21 02:15:00 (CST-6)
Location: SPRING CREEK COLONY
Magnitude: 78.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A wind power company measured a 90 mph wind gust.

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 11-JUN-21 02:20:00 to 11-JUN-21 02:20:00 (CST-6)
Location: ARTAS
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated 80 mph winds caused significant damage to a machine shed, including a partial loss of the roof and walls.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 11-JUN-21 02:47:00 to 11-JUN-21 02:47:00 (CST-6)
Location: HECLA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large cottonwood tree limb was broken off by estimated winds near 60 mph.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 11-JUN-21 03:15:00 to 11-JUN-21 03:15:00 (CST-6)
Location: ANDOVER
Magnitude: 60.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

A farm shop lost its roof from winds near 70 mph.