Thunderstorms produced damaging winds over part of southeast South Dakota during the late afternoon and evening of August 30th. There were also two reports of large hail and one report of flash flooding. The severe weather and flash flood reports were near or west of the James River, except for one damaging wind report in eastern Kingsbury County.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 30-AUG-10 16:55:00 to 30-AUG-10 16:55:00 (CST-6)
Location: ACADEMY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including branches blown down.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 30-AUG-10 17:05:00 to 30-AUG-10 17:05:00 (CST-6)
Location: ACADEMY
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm winds blew a wagon into a home, damaging the home. The winds also blew a door off a barn.

Thunderstorm Wind in DAVISON, SOUTH DAKOTA
From 30-AUG-10 17:12:00 to 30-AUG-10 17:12:00 (CST-6)
Location: MT VERNON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage. The winds were accompanied by quarter size hail.

Hail in DAVISON, SOUTH DAKOTA
From 30-AUG-10 17:12:00 to 30-AUG-10 17:12:00 (CST-6)
Location: MT VERNON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail was accompanied by damaging winds.

Thunderstorm Wind in SANBORN, SOUTH DAKOTA
From 30-AUG-10 17:20:00 to 30-AUG-10 17:20:00 (CST-6)
Location: LETCHER
Magnitude: 70.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds destroyed 5 grain bins and caused extensive tree damage. Trees up to 3 feet in diameter were uprooted.

Thunderstorm Wind in SANBORN, SOUTH DAKOTA
From 30-AUG-10 17:38:00 to 30-AUG-10 17:38:00 (CST-6)
Location: FORESTBURG
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm winds caused tree damage, including several large branches blown down.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 30-AUG-10 17:38:00 to 30-AUG-10 17:38:00 (CST-6)
Location: MARTY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew the door off a shed and caused tree damage, including large branches blown down.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 30-AUG-10 17:43:00 to 30-AUG-10 17:43:00 (CST-6)
Location: WAGNER
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds tore 15 feet of soffit from a house.

Thunderstorm Wind in SANBORN, SOUTH DAKOTA
From 30-AUG-10 17:46:00 to 30-AUG-10 17:46:00 (CST-6)
Location: ARTESIAN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including up to 12 inch diameter limbs blown down.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 30-AUG-10 18:00:00 to 30-AUG-10 18:00:00 (CST-6)
Location: PERKINS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including several branches blown down.

Thunderstorm Wind in KINGSBURY, SOUTH DAKOTA
From 30-AUG-10 18:55:00 to 30-AUG-10 18:55:00 (CST-6)
Location: OLDHAM
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew over a semi truck, and cause tree damage, including several trees blown down.

Flash Flood in SANBORN, SOUTH DAKOTA
From 30-AUG-10 21:40:00 to 31-AUG-10 00:15:00 (CST-6)
Location: LETCHER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused flash flooding of several roads and low areas.

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 30-AUG-10 18:02:00 to 30-AUG-10 18:02:00 (CST-6)
Location: CORSICA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds caused minor tree damage.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 30-AUG-10 18:20:00 to 30-AUG-10 18:20:00 (CST-6)
Location: PARKSTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, with a few branches blown down.

Thunderstorm Wind in GREGORY, SOUTH DAKOTA
From 30-AUG-10 16:20:00 to 30-AUG-10 16:20:00 (CST-6)
Location: CARLOCK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including large branches blown down.

Hail in GREGORY, SOUTH DAKOTA
From 30-AUG-10 16:46:00 to 30-AUG-10 16:46:00 (CST-6)
Location: HERRICK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GREGORY, SOUTH DAKOTA
From 30-AUG-10 16:48:00 to 30-AUG-10 16:48:00 (CST-6)
Location: HERRICK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including up to 5 inch diameter branches blown down. The winds also blew a tin part of a roof off a house, and blew a hay bale across a road.