A long-lived supercell thunderstorm developed over southwestern Harding and northern Butte Counties, then tracked eastward across northern Meade, southern Perkins, and central Ziebach Counties. Hail to the size of baseballs and 80 mph wind gusts caused minor damage across the area.

Hail in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:57:00 to 01-AUG-11 15:57:00 (MST-7)
Location: DUPREE
Magnitude: 2.50 
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The combination of large hail and 50 mph wind gusts caused damage throughout town.

Thunderstorm Wind in PERKINS, SOUTH DAKOTA
From 01-AUG-11 14:50:00 to 01-AUG-11 14:50:00 (MST-7)
Location: USTA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree branches were broken.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 01-AUG-11 15:26:00 to 01-AUG-11 15:26:00 (MST-7)
Location: (D07)FAITH ARPT
Magnitude: 69.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: ASOS

Minor wind damage occurred around Faith.

Thunderstorm Wind in HARDING, SOUTH DAKOTA
From 01-AUG-11 12:10:00 to 01-AUG-11 12:10:00 (MST-7)
Location: HARDING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 01-AUG-11 13:20:00 to 01-AUG-11 13:20:00 (MST-7)
Location: HOOVER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 60 mph.

Hail in BUTTE, SOUTH DAKOTA
From 01-AUG-11 13:30:00 to 01-AUG-11 13:30:00 (MST-7)
Location: HOOVER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 01-AUG-11 13:30:00 to 01-AUG-11 13:30:00 (MST-7)
Location: HOOVER
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winds blew down a granary, corral, large tree branches, and power lines at Hoover. A roof was blown off a barn.

Hail in HARDING, SOUTH DAKOTA
From 01-AUG-11 12:10:00 to 01-AUG-11 12:10:00 (MST-7)
Location: HARDING
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BUTTE, SOUTH DAKOTA
From 01-AUG-11 13:40:00 to 01-AUG-11 13:40:00 (MST-7)
Location: HOOVER
Magnitude: 3.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 01-AUG-11 13:44:00 to 01-AUG-11 13:44:00 (MST-7)
Location: HOOVER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported 60 mph wind gusts.

Hail in MEADE, SOUTH DAKOTA
From 01-AUG-11 14:20:00 to 01-AUG-11 14:20:00 (MST-7)
Location: MAURINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 01-AUG-11 14:20:00 to 01-AUG-11 14:20:00 (MST-7)
Location: MAURINE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:40:00 to 01-AUG-11 15:40:00 (MST-7)
Location: RED ELM
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 70 mph.

Hail in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:45:00 to 01-AUG-11 15:45:00 (MST-7)
Location: RED ELM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:45:00 to 01-AUG-11 15:45:00 (MST-7)
Location: RED ELM
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter estimated wind gusts reached 80 mph.

Hail in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:55:00 to 01-AUG-11 15:55:00 (MST-7)
Location: DUPREE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ZIEBACH, SOUTH DAKOTA
From 01-AUG-11 15:55:00 to 01-AUG-11 15:55:00 (MST-7)
Location: DUPREE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

The combination of large hail and strong wind caused damage.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 01-AUG-11 14:30:00 to 01-AUG-11 14:30:00 (MST-7)
Location: MAURINE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 70 mph.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 01-AUG-11 14:45:00 to 01-AUG-11 14:45:00 (MST-7)
Location: MAURINE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches were broken by the wind.

Hail in PERKINS, SOUTH DAKOTA
From 01-AUG-11 14:50:00 to 01-AUG-11 14:50:00 (MST-7)
Location: USTA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PERKINS, SOUTH DAKOTA
From 01-AUG-11 15:15:00 to 01-AUG-11 15:15:00 (MST-7)
Location: USTA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated at 60 mph.

Hail in MEADE, SOUTH DAKOTA
From 01-AUG-11 14:30:00 to 01-AUG-11 14:30:00 (MST-7)
Location: MAURINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public