A long-lived supercell thunderstorm developed over western Haakon County and moved south-southeast across south central South Dakota. Very large hail was reported in some areas, along with strong wind gusts, and a small tornado near Philip. The wind-driven hail caused extensive damage to houses from Corn Creek to Parmelee.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 30-JUL-13 17:00:00 to 30-JUL-13 17:00:00 (CST-6)
Location: PARMELEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 30-JUL-13 17:30:00 to 30-JUL-13 17:40:00 (CST-6)
Location: ST FRANCIS
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

The combination of large hail and wind broke the windows of a house and caused other minor damage.

Hail in TODD, SOUTH DAKOTA
From 30-JUL-13 17:30:00 to 30-JUL-13 17:40:00 (CST-6)
Location: ST FRANCIS
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TODD, SOUTH DAKOTA
From 30-JUL-13 17:50:00 to 30-JUL-13 17:55:00 (CST-6)
Location: ST FRANCIS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 30-JUL-13 17:55:00 to 30-JUL-13 17:55:00 (CST-6)
Location: ST FRANCIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph.

Hail in TODD, SOUTH DAKOTA
From 30-JUL-13 17:50:00 to 30-JUL-13 17:50:00 (CST-6)
Location: ST FRANCIS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in HAAKON, SOUTH DAKOTA
From 30-JUL-13 14:35:00 to 30-JUL-13 14:35:00 (MST-7)
Location: PHILIP
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A small tornado briefly touched down in a field southwest of Philip. It caused no damage.

Hail in MELLETTE, SOUTH DAKOTA
From 30-JUL-13 16:35:00 to 30-JUL-13 16:40:00 (CST-6)
Location: NORRIS
Magnitude: 2.50 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Hail in HAAKON, SOUTH DAKOTA
From 30-JUL-13 14:15:00 to 30-JUL-13 14:40:00 (MST-7)
Location: PHILIP
Magnitude: 2.50 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail and strong wind damaged a house, vehicles, tractors, and a baler.

Hail in HAAKON, SOUTH DAKOTA
From 30-JUL-13 14:35:00 to 30-JUL-13 14:50:00 (MST-7)
Location: PHILIP
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 30-JUL-13 14:35:00 to 30-JUL-13 14:50:00 (MST-7)
Location: PHILIP
Magnitude: 52.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The combination of large hail and wind caused extensive damage to buildings and vehicles around town.

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 30-JUL-13 14:35:00 to 30-JUL-13 14:43:00 (MST-7)
Location: PHILIP ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in JACKSON, SOUTH DAKOTA
From 30-JUL-13 14:55:00 to 30-JUL-13 15:05:00 (MST-7)
Location: KADOKA
Magnitude: 1.75 
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail damaged vehicles along Interstate 90 near Kadoka.

Hail in TODD, SOUTH DAKOTA
From 30-JUL-13 17:05:00 to 30-JUL-13 17:15:00 (CST-6)
Location: PARMELEE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 30-JUL-13 15:15:00 to 30-JUL-13 15:15:00 (MST-7)
Location: BELVIDERE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 30-JUL-13 16:55:00 to 30-JUL-13 16:55:00 (CST-6)
Location: PARMELEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 30-JUL-13 16:57:00 to 30-JUL-13 16:57:00 (CST-6)
Location: PARMELEE
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS