Many severe thunderstorms brought large hail up to golfballs along with damaging winds up to seventy mph to parts of north central and northeast South Dakota.

Flash Flood in BROWN, SOUTH DAKOTA
From 10-JUL-11 17:08:00 to 10-JUL-11 19:08:00 (CST-6)
Location: ABERDEEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain caused flash flooding of several roads in Aberdeen.

Hail in CAMPBELL, SOUTH DAKOTA
From 10-JUL-11 14:35:00 to 10-JUL-11 14:35:00 (CST-6)
Location: POLLOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CAMPBELL, SOUTH DAKOTA
From 10-JUL-11 14:45:00 to 10-JUL-11 14:45:00 (CST-6)
Location: POLLOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCPHERSON, SOUTH DAKOTA
From 10-JUL-11 15:15:00 to 10-JUL-11 15:15:00 (CST-6)
Location: EUREKA
Magnitude: 1.75 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 10-JUL-11 17:30:00 to 10-JUL-11 17:30:00 (CST-6)
Location: WAUBAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BROWN, SOUTH DAKOTA
From 10-JUL-11 17:42:00 to 10-JUL-11 17:42:00 (CST-6)
Location: ABERDEEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in BROWN, SOUTH DAKOTA
From 10-JUL-11 17:45:00 to 10-JUL-11 17:45:00 (CST-6)
Location: (ABR)ABERDEEN RGNL A
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 10-JUL-11 15:55:00 to 10-JUL-11 15:55:00 (CST-6)
Location: HECLA
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Seventy mph winds downed several trees in Hecla.

Thunderstorm Wind in DEUEL, SOUTH DAKOTA
From 10-JUL-11 19:00:00 to 10-JUL-11 19:00:00 (CST-6)
Location: CLEAR LAKE MUNI ARPT
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Sixty mph winds downed several large branches in Clear Lake.

Thunderstorm Wind in MCPHERSON, SOUTH DAKOTA
From 10-JUL-11 14:45:00 to 10-JUL-11 14:45:00 (CST-6)
Location: LONG LAKE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 10-JUL-11 16:00:00 to 10-JUL-11 16:00:00 (CST-6)
Location: ABERDEEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated north of Aberdeen.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 10-JUL-11 16:00:00 to 10-JUL-11 16:00:00 (CST-6)
Location: HECLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated by a trained spotter.

Thunderstorm Wind in MARSHALL, SOUTH DAKOTA
From 10-JUL-11 16:20:00 to 10-JUL-11 16:20:00 (CST-6)
Location: BRITTON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Seventy mph winds downed several trees in Britton.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 10-JUL-11 16:30:00 to 10-JUL-11 16:30:00 (CST-6)
Location: CLAREMONT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds took the top of a 12 foot tree off.

Thunderstorm Wind in MARSHALL, SOUTH DAKOTA
From 10-JUL-11 16:50:00 to 10-JUL-11 16:50:00 (CST-6)
Location: HILLHEAD
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 10-JUL-11 17:10:00 to 10-JUL-11 17:10:00 (CST-6)
Location: GRENVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Sixty mph winds flipped a boat over along with downing many branches.

Thunderstorm Wind in GRANT, SOUTH DAKOTA
From 10-JUL-11 18:27:00 to 10-JUL-11 18:27:00 (CST-6)
Location: MILBANK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated in Milbank.