Severe storms which developed across western South Dakota during the evening of June 10 translated eastward through the overnight hours.  An increasing low-level jet enhanced shear, with an environment strongly supportive of developing outflow pools with DCAPE of 1500-2000 J/kg.  Storms congealed into a linear bowing structure through the late overnight and early morning hours, producing numerous instances of strong to damaging wind gusts.  One (direct) injury occurred in Yankton when a tree fell on an elderly man at a senior housing complex.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 11-JUN-21 04:03:00 to 11-JUN-21 04:05:00 (CST-6)
Location: AVON
Magnitude: 56.00 EG
Property damage: 1.00K
Reported by: Social Media

Part of a large tree was blown down by strong thunderstorm winds. Property damage costs are a rough estimate.

Thunderstorm Wind in BRULE, SOUTH DAKOTA
From 11-JUN-21 02:15:00 to 11-JUN-21 02:17:00 (CST-6)
Location: (9V9)CHAMBERLAIN ARP
Magnitude: 54.00 MG
Reported by: ASOS

Automated weather station K9V9 measured a thunderstorm wind gust to 62 mph.

Thunderstorm Wind in KINGSBURY, SOUTH DAKOTA
From 11-JUN-21 04:04:00 to 11-JUN-21 04:05:00 (CST-6)
Location: DE SMET
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Emergency Manager

Thunderstorm winds downed several tree branches in De Smet, including a limb from 6 to 8 inches in diameter. Property damage costs are a rough estimate.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-21 05:26:00 to 11-JUN-21 05:28:00 (CST-6)
Location: BURBANK
Magnitude: 61.00 MG
Reported by: Public

Thunderstorm wind gusts to 70 mph were measured by a personal weather station.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 11-JUN-21 04:45:00 to 11-JUN-21 04:47:00 (CST-6)
Location: UTICA
Magnitude: 50.00 MG
Reported by: Emergency Manager

Thunderstorm wind gusts were measured up to 60 mph.

Thunderstorm Wind in BRULE, SOUTH DAKOTA
From 11-JUN-21 02:58:00 to 11-JUN-21 02:59:00 (CST-6)
Location: LYONVILLE
Magnitude: 56.00 EG
Property damage: 10.00K
Reported by: Emergency Manager

Thunderstorm winds estimated at 65 mph damaged a portion of the roof on a farm shed, as well as damaged siding on a home. Property damage costs are a rough estimate.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 11-JUN-21 04:43:00 to 11-JUN-21 04:45:00 (CST-6)
Location: YANKTON
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Emergency Manager

Thunderstorm winds toppled a large tree at the Marne Creek Apartments on the west edge of Yankton.  An elderly man was (directly) injured when the tree fell near the building entrance.  The man was taken to a local hospital to recover from injuries. Property damage costs are a rough estimate.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 11-JUN-21 03:56:00 to 11-JUN-21 03:59:00 (CST-6)
Location: WAGNER
Magnitude: 56.00 EG
Property damage: 15.00K
Reported by: Emergency Manager

Numerous power lines were downed by thunderstorm winds in Wagner. Property damage costs are a rough estimate.

Thunderstorm Wind in DAVISON, SOUTH DAKOTA
From 11-JUN-21 03:39:00 to 11-JUN-21 03:40:00 (CST-6)
Location: (MHE)MITCHELL ARPT
Magnitude: 54.00 MG
Reported by: ASOS

Automated weather station KMHE measured a thunderstorm wind gust of 62 mph.

Thunderstorm Wind in BEADLE, SOUTH DAKOTA
From 11-JUN-21 03:23:00 to 11-JUN-21 03:26:00 (CST-6)
Location: HURON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 21.00K
Reported by: Emergency Manager

Strong thunderstorm outflow winds took down numerous branches and several tree limbs up to 5 to 6 inches in diameter across most of the city of Huron. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. Property damage costs are a rough estimate.