Severe thunderstorms brought large hail up the size of tennis balls along with wind gusts up to 75 mph to parts of north central and northeast South Dakota. Several structures were damaged along with some windows broken. Trees and branches were also downed along with some damaged crops.

Hail in MCPHERSON, SOUTH DAKOTA
From 21-JUL-17 19:19:00 to 21-JUL-17 19:19:00 (CST-6)
Location: LANGLAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in FAULK, SOUTH DAKOTA
From 21-JUL-17 19:37:00 to 21-JUL-17 19:37:00 (CST-6)
Location: WECOTA
Magnitude: 1.75 
Reported by: Public

Hail in FAULK, SOUTH DAKOTA
From 21-JUL-17 19:54:00 to 21-JUL-17 19:54:00 (CST-6)
Location: WECOTA
Magnitude: 2.50 
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 21-JUL-17 20:23:00 to 21-JUL-17 20:23:00 (CST-6)
Location: LOWRY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POTTER, SOUTH DAKOTA
From 21-JUL-17 21:00:00 to 21-JUL-17 21:00:00 (CST-6)
Location: GETTYSBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HAND, SOUTH DAKOTA
From 21-JUL-17 22:33:00 to 21-JUL-17 22:33:00 (CST-6)
Location: REE HGTS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 21-JUL-17 17:24:00 to 21-JUL-17 17:24:00 (CST-6)
Location: CLAIRE CITY
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Public

Sixty mph winds broke off several large tree branches.

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 21-JUL-17 19:54:00 to 21-JUL-17 19:54:00 (CST-6)
Location: WECOTA
Magnitude: 61.00 EG
Reported by: Public

Seventy mph winds downed a tree along with many large tree branches. The winds combined with tennis ball hail caused damage to windows and crops.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 21:36:00 to 21-JUL-17 21:36:00 (CST-6)
Location: TULARE
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was downed onto a garage causing damage to it.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 21:53:00 to 21-JUL-17 21:53:00 (CST-6)
Location: REDFIELD ARPT
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Public

Seventy mph winds knocked down several older or dead trees.

Thunderstorm Wind in CODINGTON, SOUTH DAKOTA
From 21-JUL-17 23:30:00 to 21-JUL-17 23:30:00 (CST-6)
Location: GROVER
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Public

Eighty mph winds destroyed a large shed and half of a quonset building.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 21-JUL-17 18:15:00 to 21-JUL-17 18:15:00 (CST-6)
Location: NEW EFFINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 21-JUL-17 17:50:00 to 21-JUL-17 17:50:00 (MST-7)
Location: MC LAUGHLIN
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 21-JUL-17 18:15:00 to 21-JUL-17 18:15:00 (MST-7)
Location: MAHTO
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 21:23:00 to 21-JUL-17 21:23:00 (CST-6)
Location: REDFIELD
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Winds gusted to over seventy mph in Redfield.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 22:00:00 to 21-JUL-17 22:00:00 (CST-6)
Location: BRENTFORD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Sixty mph winds were estimated.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 22:23:00 to 21-JUL-17 22:23:00 (CST-6)
Location: CONDE
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Seventy-five mph winds were estimated.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 21-JUL-17 22:35:00 to 21-JUL-17 22:35:00 (CST-6)
Location: MILLER ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 21-JUL-17 22:42:00 to 21-JUL-17 22:42:00 (CST-6)
Location: TURTON
Magnitude: 65.00 MG
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 21-JUL-17 22:45:00 to 21-JUL-17 22:45:00 (CST-6)
Location: MILLER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 21-JUL-17 23:10:00 to 21-JUL-17 23:10:00 (CST-6)
Location: DANFORTH
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CODINGTON, SOUTH DAKOTA
From 21-JUL-17 23:25:00 to 21-JUL-17 23:25:00 (CST-6)
Location: HENRY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.