Thunderstorms produced damaging winds and flash flooding from heavy rain along and near the Missouri River in southeast South Dakota during the late afternoon of August 8th.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 08-AUG-10 16:00:00 to 08-AUG-10 16:00:00 (CST-6)
Location: PERKINS
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused an unknown amount of damage to trees and power lines.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 08-AUG-10 16:10:00 to 08-AUG-10 16:10:00 (CST-6)
Location: TABOR
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 08-AUG-10 16:15:00 to 08-AUG-10 16:15:00 (CST-6)
Location: NAPA
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds overturned several campers and caused widespread tree damage, including large trees blown down at a Lewis and Clark Lake campground. A fee collector was injured by tree debris..

Flash Flood in BON HOMME, SOUTH DAKOTA
From 08-AUG-10 16:26:00 to 08-AUG-10 18:00:00 (CST-6)
Location: AVON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Heavy rain caused flash flooding of low lying yards and streets.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 08-AUG-10 16:35:00 to 08-AUG-10 16:35:00 (CST-6)
Location: (YKN)CHAN GURNEY ARP
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 08-AUG-10 16:50:00 to 08-AUG-10 16:50:00 (CST-6)
Location: IRENE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in YANKTON, SOUTH DAKOTA
From 08-AUG-10 16:52:00 to 08-AUG-10 16:52:00 (CST-6)
Location: NAPA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of up to 3 inches in a short time caused flash flooding of streets, ditches, and other low areas.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 08-AUG-10 16:05:00 to 08-AUG-10 16:05:00 (CST-6)
Location: TYNDALL
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds caused tree damage, including large trees blown down. The winds also blew down power lines, damaged several small sheds, and tore shingles off roofs.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 08-AUG-10 16:00:00 to 08-AUG-10 16:00:00 (CST-6)
Location: AVON
Magnitude: 61.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds caused widespread damage to trees and power lines. The tree damage included large trees uprooted or blown down, and at least two houses were damaged by falling trees. The damage to power lines caused a power outage over the town which lasted about 5 hours. The winds also destroyed a large shed and damaged a camper parked in the shed.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 08-AUG-10 15:32:00 to 08-AUG-10 15:32:00 (CST-6)
Location: WAGNER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including branches blown down.