Numerous thunderstorms developed along a stationary boundary across central and north central South Dakota. Several of these thunderstorms became severe with large hail up to baseball size, damaging winds, flash flooding, along with an isolated tornado.

Flash Flood in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 21:10:00 to 22-JUN-14 00:10:00 (CST-6)
Location: HOSMER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Very heavy rains of over 3 inches resulted in water flowing out of the fields and over a county road east of Hosmer.

Hail in CORSON, SOUTH DAKOTA
From 21-JUN-14 12:38:00 to 21-JUN-14 12:38:00 (MST-7)
Location: WAKPALA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in CORSON, SOUTH DAKOTA
From 21-JUN-14 12:45:00 to 21-JUN-14 12:45:00 (MST-7)
Location: WAKPALA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CAMPBELL, SOUTH DAKOTA
From 21-JUN-14 13:53:00 to 21-JUN-14 13:53:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CAMPBELL, SOUTH DAKOTA
From 21-JUN-14 14:05:00 to 21-JUN-14 14:05:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.75 
Reported by: Law Enforcement

Hail in WALWORTH, SOUTH DAKOTA
From 21-JUN-14 14:35:00 to 21-JUN-14 14:35:00 (CST-6)
Location: SITKA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 15:47:00 to 21-JUN-14 15:47:00 (CST-6)
Location: BOWDLE
Magnitude: 1.75 
Reported by: Law Enforcement

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 16:35:00 to 21-JUN-14 16:35:00 (CST-6)
Location: GRETNA
Magnitude: 2.00 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 16:40:00 to 21-JUN-14 16:40:00 (CST-6)
Location: ROSCOE
Magnitude: 2.50 
Reported by: Trained Spotter

Tennis ball size hail damaged the spotters vehicle.

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 16:52:00 to 21-JUN-14 16:52:00 (CST-6)
Location: LOYALTON
Magnitude: 1.00 
Reported by: Storm Chaser

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 16:55:00 to 21-JUN-14 16:55:00 (CST-6)
Location: ROSCOE
Magnitude: 1.75 
Reported by: Storm Chaser

Hail in STANLEY, SOUTH DAKOTA
From 21-JUN-14 16:00:00 to 21-JUN-14 16:00:00 (MST-7)
Location: SANSARC
Magnitude: 2.00 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 17:18:00 to 21-JUN-14 17:18:00 (CST-6)
Location: CRAVEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STANLEY, SOUTH DAKOTA
From 21-JUN-14 16:21:00 to 21-JUN-14 16:21:00 (MST-7)
Location: ORTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCPHERSON, SOUTH DAKOTA
From 21-JUN-14 17:32:00 to 21-JUN-14 17:32:00 (CST-6)
Location: HILLSVIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in POTTER, SOUTH DAKOTA
From 21-JUN-14 17:55:00 to 21-JUN-14 17:55:00 (CST-6)
Location: GETTYSBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 18:14:00 to 21-JUN-14 18:14:00 (CST-6)
Location: HOSMER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 21-JUN-14 18:24:00 to 21-JUN-14 18:24:00 (CST-6)
Location: BOWDLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in FAULK, SOUTH DAKOTA
From 21-JUN-14 18:45:00 to 21-JUN-14 18:45:00 (CST-6)
Location: MIRANDA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DEWEY, SOUTH DAKOTA
From 21-JUN-14 18:01:00 to 21-JUN-14 18:01:00 (MST-7)
Location: MOREAU
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 21-JUN-14 19:22:00 to 21-JUN-14 19:22:00 (CST-6)
Location: MOBRIDGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in DEWEY, SOUTH DAKOTA
From 21-JUN-14 17:45:00 to 21-JUN-14 17:47:00 (MST-7)
Location: WHITEHORSE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

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

Thunderstorm Wind in WALWORTH, SOUTH DAKOTA
From 21-JUN-14 15:15:00 to 21-JUN-14 15:15:00 (CST-6)
Location: JAVA JCT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Sixty-five mph winds were estimated northeast of Java.

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 21-JUN-14 18:30:00 to 21-JUN-14 18:30:00 (CST-6)
Location: GORMAN
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 21-JUN-14 19:05:00 to 21-JUN-14 19:05:00 (CST-6)
Location: LOWER BRULE
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Public

Sixty-five mph winds brought down several tree branches.

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 21-JUN-14 19:21:00 to 21-JUN-14 19:21:00 (CST-6)
Location: LOWER BRULE
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Public

Seventy mph winds brought down many branches.

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 21-JUN-14 19:22:00 to 21-JUN-14 19:22:00 (CST-6)
Location: FAULKTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 21-JUN-14 19:30:00 to 21-JUN-14 19:30:00 (CST-6)
Location: POLO
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Flash Flood in FAULK, SOUTH DAKOTA
From 22-JUN-14 00:00:00 to 22-JUN-14 03:00:00 (CST-6)
Location: CRESBARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Very heavy rains of around 3 inches flooded a township road for several hours.

Hail in POTTER, SOUTH DAKOTA
From 21-JUN-14 17:48:00 to 21-JUN-14 17:48:00 (CST-6)
Location: GETTYSBURG
Magnitude: 2.75 
Reported by: Public