Severe thunderstorms developed along a strong cold front which moved quickly east across South Dakota. Several supercell thunderstorms developed in a strongly sheared environment producing several tornados. Also, large hail, damaging winds, along with some flash flooding occurred.

Tornado in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 19:50:00 to 17-JUN-07 19:52:00 (CST-6)
Location: AKASKA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tornado touched down briefly in an open field with no damage reported.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 17-JUN-07 21:15:00 to 17-JUN-07 21:15:00 (CST-6)
Location: WESTPORT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Seventy mph winds blew out some windows in a camper and also moved the camper several feet.

Thunderstorm Wind in CAMPBELL, SOUTH DAKOTA
From 17-JUN-07 19:30:00 to 17-JUN-07 19:30:00 (CST-6)
Location: HERREID
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MCPHERSON, SOUTH DAKOTA
From 17-JUN-07 20:10:00 to 17-JUN-07 20:10:00 (CST-6)
Location: EUREKA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 17-JUN-07 21:05:00 to 17-JUN-07 21:05:00 (CST-6)
Location: GAGE
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Eighty mph winds caused some damage to a residence with multiple large tree limbs downed. One cottonwood tree was split at the base. A small camper was pushed about 35 feet with a small unanchored outbuilding nudged over.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 17-JUN-07 21:35:00 to 17-JUN-07 21:35:00 (CST-6)
Location: HECLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 22:00:00 to 18-JUN-07 00:30:00 (CST-6)
Location: SELBY ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several county roads were flooded between Selby and Akaska.

Hail in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 19:05:00 to 17-JUN-07 19:05:00 (CST-6)
Location: AKASKA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SULLY, SOUTH DAKOTA
From 17-JUN-07 19:10:00 to 17-JUN-07 19:10:00 (CST-6)
Location: GALLAGHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CAMPBELL, SOUTH DAKOTA
From 17-JUN-07 20:00:00 to 17-JUN-07 20:00:00 (CST-6)
Location: MOUND CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STANLEY, SOUTH DAKOTA
From 17-JUN-07 19:20:00 to 17-JUN-07 19:20:00 (MST-7)
Location: MISSION RIDGE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 19:40:00 to 17-JUN-07 19:41:00 (CST-6)
Location: LOWRY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A weak tornado touched down briefly in an open field with no damage found.

Tornado in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 19:42:00 to 17-JUN-07 19:45:00 (CST-6)
Location: JAVA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tornado touched down briefly in an open field with no damage reported.

Tornado in WALWORTH, SOUTH DAKOTA
From 17-JUN-07 19:47:00 to 17-JUN-07 19:53:00 (CST-6)
Location: JAVA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado damaged two pole barns and broke two windows out of two vehicles. Also, some large cottonwood trees were damaged.

Flash Flood in MCPHERSON, SOUTH DAKOTA
From 17-JUN-07 22:03:00 to 18-JUN-07 00:30:00 (CST-6)
Location: EUREKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains caused flash flooding in Eureka. Several basements had water in them with some sewers backing up. One basement wall collapsed.

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 17-JUN-07 19:35:00 to 17-JUN-07 19:35:00 (CST-6)
Location: CLIFTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter