Morning Widespread thunderstorms developed across portions of south central and southeast South Dakota and produced large hail and heavy rain.  The hail resulted in crop damage and the heavy rain caused flooding in a few areas of southeast South Dakota.

Hail in HUTCHINSON, SOUTH DAKOTA
From 21-AUG-17 12:06:00 to 21-AUG-17 12:06:00 (CST-6)
Location: MENNO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in YANKTON, SOUTH DAKOTA
From 21-AUG-17 12:36:00 to 21-AUG-17 12:36:00 (CST-6)
Location: YANKTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy rain occurred at the same time.

Hail in DOUGLAS, SOUTH DAKOTA
From 21-AUG-17 11:05:00 to 21-AUG-17 11:05:00 (CST-6)
Location: NEW HOLLAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DOUGLAS, SOUTH DAKOTA
From 21-AUG-17 11:25:00 to 21-AUG-17 11:25:00 (CST-6)
Location: CORSICA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TURNER, SOUTH DAKOTA
From 21-AUG-17 11:53:00 to 21-AUG-17 11:53:00 (CST-6)
Location: PARKER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in HUTCHINSON, SOUTH DAKOTA
From 21-AUG-17 11:55:00 to 21-AUG-17 11:55:00 (CST-6)
Location: OLIVET
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy Rain in LINCOLN, SOUTH DAKOTA
From 21-AUG-17 12:43:00 to 21-AUG-17 12:43:00 (CST-6)
Location: SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

One to two inches of water over the roads.

Heavy Rain in MINNEHAHA, SOUTH DAKOTA
From 21-AUG-17 12:38:00 to 21-AUG-17 12:38:00 (CST-6)
Location: EAST SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy Rain in MINNEHAHA, SOUTH DAKOTA
From 21-AUG-17 13:19:00 to 21-AUG-17 13:19:00 (CST-6)
Location: EAST SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Reported at the intersection of 42nd and Sycamore.

Heavy Rain in MINNEHAHA, SOUTH DAKOTA
From 21-AUG-17 13:27:00 to 21-AUG-17 13:27:00 (CST-6)
Location: SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Social Media report.

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 21-AUG-17 11:10:00 to 21-AUG-17 11:10:00 (CST-6)
Location: CORSICA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A few tree branches downed.

Heavy Rain in LINCOLN, SOUTH DAKOTA
From 21-AUG-17 11:31:00 to 21-AUG-17 11:31:00 (CST-6)
Location: SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Significant flooding at 69th & Minnesota Intersection.

Hail in BRULE, SOUTH DAKOTA
From 21-AUG-17 10:00:00 to 21-AUG-17 10:00:00 (CST-6)
Location: (9V9)CHAMBERLAIN ARP
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TURNER, SOUTH DAKOTA
From 21-AUG-17 10:06:00 to 21-AUG-17 10:06:00 (CST-6)
Location: MONROE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in AURORA, SOUTH DAKOTA
From 21-AUG-17 11:05:00 to 21-AUG-17 11:05:00 (CST-6)
Location: AURORA CENTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy Rain in MINNEHAHA, SOUTH DAKOTA
From 21-AUG-17 14:25:00 to 21-AUG-17 14:25:00 (CST-6)
Location: SIOUX FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Flood stage recorded at river gage at Western Avenue.

Heavy Rain in MINNEHAHA, SOUTH DAKOTA
From 21-AUG-17 13:29:00 to 21-AUG-17 13:29:00 (CST-6)
Location: ELLIS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Intersection at 26 and Stebben flooded.