An area of low pressure and associated cold front moving across South Dakota produced many severe thunderstorms. Tennis ball size hail and damaging wind gusts up to eighty mph along with a few tornadoes were reported.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 13:29:00 to 03-AUG-12 13:29:00 (CST-6)
Location: MOBRIDGE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 13:52:00 to 03-AUG-12 13:52:00 (CST-6)
Location: MOBRIDGE
Magnitude: 0.88 
Reported by: COOP Observer

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:20:00 to 03-AUG-12 14:20:00 (CST-6)
Location: SELBY
Magnitude: 1.50 
Reported by: SHAVE Project

Crop damage was reported due to ping pong size hail.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:00:00 to 03-AUG-12 14:00:00 (CST-6)
Location: SITKA
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:00:00 to 03-AUG-12 14:00:00 (CST-6)
Location: SITKA
Magnitude: 2.50 
Reported by: SHAVE Project

Crop damage was reported due to tennis ball size hail.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:05:00 to 03-AUG-12 14:05:00 (CST-6)
Location: GLENHAM
Magnitude: 1.50 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:15:00 to 03-AUG-12 14:15:00 (CST-6)
Location: SITKA
Magnitude: 1.50 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:17:00 to 03-AUG-12 14:17:00 (CST-6)
Location: SELBY
Magnitude: 1.25 
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:18:00 to 03-AUG-12 14:18:00 (CST-6)
Location: SITKA
Magnitude: 1.25 
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:20:00 to 03-AUG-12 14:20:00 (CST-6)
Location: GLENHAM
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SELBY
Magnitude: 1.00 
Reported by: Law Enforcement

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:20:00 to 03-AUG-12 14:20:00 (CST-6)
Location: SELBY ARPT
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SITKA
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: GLENHAM
Magnitude: 1.50 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SITKA
Magnitude: 2.50 
Reported by: SHAVE Project

Tennis ball size hail caused crop and roof damage.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:38:00 to 03-AUG-12 14:38:00 (CST-6)
Location: SELBY ARPT
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 17:07:00 to 03-AUG-12 17:07:00 (CST-6)
Location: TURTON
Magnitude: 70.00 EG
Reported by: COOP Observer

An estimated thunderstorm wind gust of seventy to eighty mph was reported.

Thunderstorm Wind in HAMLIN, SOUTH DAKOTA
From 03-AUG-12 18:20:00 to 03-AUG-12 18:20:00 (CST-6)
Location: CASTLEWOOD
Magnitude: 70.00 EG
Reported by: Emergency Manager

Eighty mph winds downed between thirty and forty trees in Castlewood and Hayti.  Many power outages were also reported.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 03-AUG-12 18:56:00 to 03-AUG-12 18:56:00 (CST-6)
Location: ROSHOLT
Magnitude: 52.00 EG
Reported by: Emergency Manager

An estimated thunderstorm wind gust of sixty mph downed trees and caused power outages.

Hail in CAMPBELL, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.50 
Reported by: SHAVE Project

Ping pong size hail caused minor crop damage.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SELBY
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SELBY
Magnitude: 1.00 
Reported by: SHAVE Project

Quarter size hail caused some crop damage.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: SELBY ARPT
Magnitude: 1.75 
Reported by: SHAVE Project

Golf ball size hail damaged some vehicles.

Hail in CAMPBELL, SOUTH DAKOTA
From 03-AUG-12 14:35:00 to 03-AUG-12 14:35:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:51:00 to 03-AUG-12 14:51:00 (CST-6)
Location: JAVA
Magnitude: 1.00 
Reported by: Public

Hail in FAULK, SOUTH DAKOTA
From 03-AUG-12 14:45:00 to 03-AUG-12 14:45:00 (CST-6)
Location: BURKMERE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 15:03:00 to 03-AUG-12 15:03:00 (CST-6)
Location: JAVA
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 15:04:00 to 03-AUG-12 15:04:00 (CST-6)
Location: JAVA
Magnitude: 1.00 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:28:00 to 03-AUG-12 15:28:00 (CST-6)
Location: BOWDLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:31:00 to 03-AUG-12 15:31:00 (CST-6)
Location: GRETNA
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:15:00 to 03-AUG-12 15:15:00 (CST-6)
Location: BOWDLE
Magnitude: 2.50 
Reported by: Law Enforcement

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:55:00 to 03-AUG-12 15:55:00 (CST-6)
Location: CRAVEN
Magnitude: 1.75 
Reported by: Department of Highways

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: GRETNA
Magnitude: 1.25 
Reported by: SHAVE Project

Half dollar size hail caused damage to shingles and crops.

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: GRETNA
Magnitude: 1.00 
Reported by: SHAVE Project

Quarter size hail caused damage to crops.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 03-AUG-12 16:23:00 to 03-AUG-12 16:23:00 (CST-6)
Location: RICHMOND
Magnitude: 55.00 MG
Reported by: Mesonet

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: BOWDLE
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: SELBY
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: JAVA JCT
Magnitude: 1.25 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:13:00 to 03-AUG-12 15:13:00 (CST-6)
Location: LOYALTON
Magnitude: 1.25 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:30:00 to 03-AUG-12 15:30:00 (CST-6)
Location: GRETNA
Magnitude: 1.25 
Reported by: SHAVE Project

Half dollar size hail damaged vehicles.

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:30:00 to 03-AUG-12 15:30:00 (CST-6)
Location: BEEBE
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:30:00 to 03-AUG-12 15:30:00 (CST-6)
Location: LOYALTON
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:53:00 to 03-AUG-12 15:53:00 (CST-6)
Location: LOYALTON
Magnitude: 1.00 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:45:00 to 03-AUG-12 15:45:00 (CST-6)
Location: BOWDLE
Magnitude: 1.75 
Reported by: SHAVE Project

Golf ball size hail caused damage to vehicles.

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:45:00 to 03-AUG-12 15:45:00 (CST-6)
Location: ROSCOE
Magnitude: 1.25 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 16:00:00 to 03-AUG-12 16:00:00 (CST-6)
Location: BOWDLE
Magnitude: 1.75 
Reported by: SHAVE Project

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 16:00:00 to 03-AUG-12 16:00:00 (CST-6)
Location: BEEBE
Magnitude: 1.00 
Reported by: SHAVE Project

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:44:00 to 03-AUG-12 16:44:00 (CST-6)
Location: GALLUP
Magnitude: 70.00 EG
Reported by: Emergency Manager

An estimated wind gust of seventy to eighty mph was reported.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:59:00 to 03-AUG-12 16:59:00 (CST-6)
Location: DOLAND
Magnitude: 52.00 EG
Reported by: Public

An estimated thunderstorm wind gust of sixty mph was reported.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 17:03:00 to 03-AUG-12 17:03:00 (CST-6)
Location: BRENTFORD
Magnitude: 61.00 EG
Reported by: Storm Chaser

An estimated thunderstorm wind gust of seventy mph caused tree branches in Brentford to come down.

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 03-AUG-12 17:15:00 to 03-AUG-12 17:15:00 (CST-6)
Location: RAYMOND
Magnitude: 52.00 EG
Reported by: Trained Spotter

An estimated thunderstorm wind gust of sixty mph was reported.

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 03-AUG-12 17:36:00 to 03-AUG-12 17:36:00 (CST-6)
Location: GARDEN CITY
Magnitude: 52.00 EG
Reported by: Public

An estimated thunderstorm wind gust of sixty mph caused tree damage.

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:13:00 to 03-AUG-12 15:13:00 (CST-6)
Location: LOYALTON
Magnitude: 1.75 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 16:15:00 to 03-AUG-12 16:15:00 (CST-6)
Location: MINA
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:40:00 to 03-AUG-12 16:40:00 (CST-6)
Location: REDFIELD
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:34:00 to 03-AUG-12 14:54:00 (CST-6)
Location: SELBY
Magnitude: 1.75 
Reported by: Trained Spotter

Hail up to golf ball size lasted for twenty minutes.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:53:00 to 03-AUG-12 15:03:00 (CST-6)
Location: JAVA
Magnitude: 1.75 
Reported by: Public

Hail up to golfball size lasted for ten minutes.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:13:00 to 03-AUG-12 15:13:00 (CST-6)
Location: LOYALTON
Magnitude: 61.00 EG
Reported by: Public

The windows and vinyl siding on the west side of a house were destroyed due to seventy mph winds and golf ball size hail.  The wind and hail also damaged the west side of a barn and severely damaged the bean and corn crops.

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 03-AUG-12 16:15:00 to 03-AUG-12 16:15:00 (CST-6)
Location: CHELSEA
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter estimated wind gusts of sixty mph.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 16:15:00 to 03-AUG-12 16:15:00 (CST-6)
Location: MINA
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter estimated a wind gust of sixty mph.

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 03-AUG-12 16:17:00 to 03-AUG-12 16:17:00 (CST-6)
Location: CHELSEA
Magnitude: 61.00 EG
Reported by: Trained Spotter

A trained spotter reported large tree branches down due to an estimated seventy mph winds.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:40:00 to 03-AUG-12 16:40:00 (CST-6)
Location: REDFIELD
Magnitude: 70.00 EG
Reported by: Emergency Manager

The emergency manager reported large branches downed due to estimated wind gusts of seventy to eighty mph.

Tornado in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:45:00 to 03-AUG-12 16:46:00 (CST-6)
Location: REDFIELD ARPT
Tornado F-scale: EF0
Reported by: Public

The public reported a tornado briefly touching down in a cornfield.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 16:55:00 to 03-AUG-12 16:55:00 (CST-6)
Location: FRANKFORT
Magnitude: 61.00 EG
Reported by: Public

Seventy mph winds destroyed three grain bins along with downing numerous trees in a shelter belt.  Significant crop damage also occurred from the combination of winds and dime size hail.

Tornado in SPINK, SOUTH DAKOTA
From 03-AUG-12 17:05:00 to 03-AUG-12 17:07:00 (CST-6)
Location: CONDE
Tornado F-scale: EF0
Reported by: Storm Chaser

A weak tornado touched down in a cornfield three miles southwest of Conde.

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:32:00 to 03-AUG-12 14:32:00 (CST-6)
Location: SITKA
Magnitude: 1.00 
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 03-AUG-12 14:30:00 to 03-AUG-12 14:30:00 (CST-6)
Location: GLENHAM
Magnitude: 1.00 
Reported by: SHAVE Project

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 03-AUG-12 16:05:00 to 03-AUG-12 16:05:00 (CST-6)
Location: FAULKTON
Magnitude: 52.00 EG
Reported by: Law Enforcement

An estimated wind gust of sixty mph was reported by law enforcement.

Hail in EDMUNDS, SOUTH DAKOTA
From 03-AUG-12 15:00:00 to 03-AUG-12 15:00:00 (CST-6)
Location: BOWDLE
Magnitude: 1.25 
Reported by: SHAVE Project

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 03-AUG-12 17:00:00 to 03-AUG-12 17:00:00 (CST-6)
Location: TURTON
Magnitude: 70.00 EG
Reported by: Emergency Manager

Numerous trees along with power lines were downed by eighty mph winds.  A building was also moved fifty feet off of it's foundation.

Hail in SPINK, SOUTH DAKOTA
From 03-AUG-12 17:08:00 to 03-AUG-12 17:08:00 (CST-6)
Location: DOLAND
Magnitude: 1.00 
Reported by: Emergency Manager