Thunderstorms produced damaging winds over a large part of southeast South Dakota beginning just before midnight on June 10th, and continuing well into the predawn hours of June 11th. The storms also produced very heavy rain, which caused flash flooding at several locations.

Flash Flood in MINNEHAHA, SOUTH DAKOTA
From 11-JUN-10 01:55:00 to 11-JUN-10 04:00:00 (CST-6)
Location: ELLIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused flash flooding of several streets in the southern part of Sioux Falls, with water up to two feet deep. Basement flooding was also reported.

Thunderstorm Wind in MOODY, SOUTH DAKOTA
From 11-JUN-10 02:05:00 to 11-JUN-10 02:05:00 (CST-6)
Location: EGAN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including up to 4 foot diameter trees blown down.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 11-JUN-10 02:07:00 to 11-JUN-10 02:07:00 (CST-6)
Location: SOUTH SIOUX FALLS
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down light poles.

Flash Flood in LAKE, SOUTH DAKOTA
From 11-JUN-10 02:20:00 to 11-JUN-10 05:00:00 (CST-6)
Location: MADISON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused flash flooding of roads and basements. Some roads in Madison were under two feet of water.

Flash Flood in MCCOOK, SOUTH DAKOTA
From 11-JUN-10 01:47:00 to 11-JUN-10 03:00:00 (CST-6)
Location: SALEM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain flooded streets and basements, with water from the flooded streets over sidewalks.

Flash Flood in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:50:00 to 11-JUN-10 04:30:00 (CST-6)
Location: VERMILLION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused widespread street flooding. Several basements were also flooded.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 11-JUN-10 01:50:00 to 11-JUN-10 01:50:00 (CST-6)
Location: BERESFORD
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down power lines and a billboard near Interstate 29.

Flash Flood in LINCOLN, SOUTH DAKOTA
From 11-JUN-10 01:51:00 to 11-JUN-10 04:00:00 (CST-6)
Location: BERESFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flash flooding of rural roads and fields.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 11-JUN-10 01:51:00 to 11-JUN-10 01:51:00 (CST-6)
Location: BERESFORD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down power lines and caused tree damage, including up to 6 inch diameter branches blown down.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 11-JUN-10 01:00:00 to 11-JUN-10 01:00:00 (CST-6)
Location: YANKTON
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 11-JUN-10 01:05:00 to 11-JUN-10 01:05:00 (CST-6)
Location: MISSION HILL
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds destroyed several large grain bins, blew down power lines and poles, and caused widespread tree damage, including several large trees blown down.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:13:00 to 11-JUN-10 01:13:00 (CST-6)
Location: WAKONDA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused tree damage, including a large tree uprooted.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:17:00 to 11-JUN-10 01:17:00 (CST-6)
Location: DALESBURG
Magnitude: 78.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds destroyed a farm building and heavily damaged two others.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:20:00 to 11-JUN-10 01:20:00 (CST-6)
Location: VERMILLION
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew a delivery truck over. the winds also caused tree damage, including large branches blown down.

Thunderstorm Wind in AURORA, SOUTH DAKOTA
From 10-JUN-10 23:05:00 to 10-JUN-10 23:05:00 (CST-6)
Location: WHITE LAKE
Magnitude: 61.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew the roof off a house and heavily damaged the adjoining garage. The winds also blew out car windows and caused tree damage, including several trees blown down.

Thunderstorm Wind in AURORA, SOUTH DAKOTA
From 10-JUN-10 23:30:00 to 10-JUN-10 23:30:00 (CST-6)
Location: STICKNEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

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

Thunderstorm Wind in DAVISON, SOUTH DAKOTA
From 11-JUN-10 00:05:00 to 11-JUN-10 00:05:00 (CST-6)
Location: ETHAN
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds destroyed a shed and caused tree damage.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 11-JUN-10 00:15:00 to 11-JUN-10 00:15:00 (CST-6)
Location: MILLTOWN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage.

Thunderstorm Wind in MCCOOK, SOUTH DAKOTA
From 11-JUN-10 00:45:00 to 11-JUN-10 00:45:00 (CST-6)
Location: STANLEY CORNER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage.

Thunderstorm Wind in MCCOOK, SOUTH DAKOTA
From 11-JUN-10 01:00:00 to 11-JUN-10 01:25:00 (CST-6)
Location: SALEM
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm winds caused tree damage. The winds were accompanied by heavy rainfall of 1.50 inches.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 11-JUN-10 01:40:00 to 11-JUN-10 01:40:00 (CST-6)
Location: HUDSON
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew the roof off a shed, and blew down power lines at a cattle ranch.

Thunderstorm Wind in LAKE, SOUTH DAKOTA
From 11-JUN-10 01:40:00 to 11-JUN-10 01:40:00 (CST-6)
Location: MADISON MUNI ARPT
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew shingles off roofs, and moved docks on Lake Madison.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 11-JUN-10 01:45:00 to 11-JUN-10 01:45:00 (CST-6)
Location: MC COOK LAKE
Magnitude: 80.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew the roof off a mobile home, blew a small building over a road, and caused tree damage, including one tree blown into a house.

Flash Flood in BROOKINGS, SOUTH DAKOTA
From 11-JUN-10 02:50:00 to 11-JUN-10 05:00:00 (CST-6)
Location: WHITE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flooding of rural roads and washed out some of the roads.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:20:00 to 11-JUN-10 01:20:00 (CST-6)
Location: WAKONDA
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds damaged a shop, and displaced debris up to a half mile to the east.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:20:00 to 11-JUN-10 01:20:00 (CST-6)
Location: VERMILLION
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew part of the roof off a church.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:23:00 to 11-JUN-10 01:23:00 (CST-6)
Location: VERMILLION
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused tree damage, including at least one tree uprooted.

Thunderstorm Wind in LAKE, SOUTH DAKOTA
From 11-JUN-10 01:24:00 to 11-JUN-10 01:24:00 (CST-6)
Location: FRANKLIN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds caused tree damage, including a two foot diameter tree blown down.

Thunderstorm Wind in LAKE, SOUTH DAKOTA
From 11-JUN-10 01:35:00 to 11-JUN-10 01:35:00 (CST-6)
Location: MADISON MUNI ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including a 20 inch diameter tree blown down.

Flash Flood in DAVISON, SOUTH DAKOTA
From 11-JUN-10 01:30:00 to 11-JUN-10 03:30:00 (CST-6)
Location: (MHE)MITCHELL ARPT
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of at least 3 inches caused Enemy Creek to overflow and flood nearby roads. The rainfall also caused flooding of roads and basements in Mitchell. A motorcycle business was flooded, resulting in damage to merchandise, although little damage to the motorcycles was reported.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 11-JUN-10 01:42:00 to 11-JUN-10 01:52:00 (CST-6)
Location: ELLIS
Magnitude: 87.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused widespread damage in the Sioux Falls area. Wood and siding were blown off a new house and a nearby fence was blown over. The winds caused tree damage, including 2 to 3 foot diameter trees blown down. Debris from the tree damage blocked several roads. Garages were blown off three homes which were next to each other, and other nearby homes suffered significant damage in an area on West Eli Court which was subjected to the strongest winds, estimated at 100 mph. Windows were blown out in several of these homes, and a large camper was overturned in the same area. A wind gust of 74 mph was measured elsewhere in the city. The winds blew down out power lines in parts of the city.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 11-JUN-10 01:28:00 to 11-JUN-10 01:28:00 (CST-6)
Location: GREENFELD
Magnitude: 78.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew empty grain bins off anchors.

Flash Flood in SANBORN, SOUTH DAKOTA
From 11-JUN-10 00:30:00 to 11-JUN-10 02:30:00 (CST-6)
Location: WOONSOCKET
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused flash flooding of fields, roads, and at least one basement in a rural area.

Thunderstorm Wind in LAKE, SOUTH DAKOTA
From 11-JUN-10 01:50:00 to 11-JUN-10 01:50:00 (CST-6)
Location: CHESTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including up to 6 inch diameter branches blown down.