Severe storms moved from Montana southeastward across western South Dakota into south central South Dakota, merging with another area of storms over west central South Dakota. The storms produced a wide swath of hail and strong winds from northern Butte County, through southern Meade, eastern Pennington, Jackson, and Bennett Counties. Millions of dollars in crop damage was reported, along with some damage to homes and automobiles.

Hail in BUTTE, SOUTH DAKOTA
From 19-JUL-10 14:30:00 to 19-JUL-10 14:30:00 (MST-7)
Location: CASTLE ROCK
Magnitude: 1.00 
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large hail broke the windows of a pickup and injured a small child.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 19-JUL-10 16:20:00 to 19-JUL-10 16:35:00 (MST-7)
Location: CREIGHTON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 70 mph.

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 19-JUL-10 16:43:00 to 19-JUL-10 16:43:00 (MST-7)
Location: PHILIP
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated wind gusts of 60 mph.

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 19-JUL-10 17:00:00 to 19-JUL-10 17:00:00 (MST-7)
Location: INTERIOR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated at 60 mph.

Hail in PENNINGTON, SOUTH DAKOTA
From 19-JUL-10 16:55:00 to 19-JUL-10 17:00:00 (MST-7)
Location: QUINN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 19-JUL-10 16:55:00 to 19-JUL-10 17:00:00 (MST-7)
Location: QUINN
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Wind-driven hail caused minor damage to automobiles.

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 19-JUL-10 14:02:00 to 19-JUL-10 14:02:00 (MST-7)
Location: CASTLE ROCK
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Hail in JACKSON, SOUTH DAKOTA
From 19-JUL-10 17:10:00 to 19-JUL-10 17:25:00 (MST-7)
Location: WANBLEE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 19-JUL-10 17:10:00 to 19-JUL-10 17:25:00 (MST-7)
Location: WANBLEE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The combination of hail and wind produced minor damage to a home and automobile.

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 19-JUL-10 17:30:00 to 19-JUL-10 17:45:00 (MST-7)
Location: LONG VALLEY
Magnitude: 52.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: COOP Observer

Some automobiles in Long Valley were damaged by the winds and hail.

Hail in BENNETT, SOUTH DAKOTA
From 19-JUL-10 17:50:00 to 19-JUL-10 17:50:00 (MST-7)
Location: VETAL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in BENNETT, SOUTH DAKOTA
From 19-JUL-10 17:50:00 to 19-JUL-10 17:50:00 (MST-7)
Location: VETAL
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The combination of hail and wind damaged a home and automobiles.

Hail in BUTTE, SOUTH DAKOTA
From 19-JUL-10 14:43:00 to 19-JUL-10 14:48:00 (MST-7)
Location: CASTLE ROCK
Magnitude: 1.75 
Property damage: 75.00K
Crop damage: 300.00K
Reported by: Trained Spotter

The combination of hail and wind damaged homes and automobiles in the area and destroyed wheat crops.

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 19-JUL-10 14:45:00 to 19-JUL-10 14:45:00 (MST-7)
Location: CASTLE ROCK
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 BUTTE, SOUTH DAKOTA
From 19-JUL-10 14:58:00 to 19-JUL-10 14:58:00 (MST-7)
Location: NEWELL
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in MEADE, SOUTH DAKOTA
From 19-JUL-10 15:40:00 to 19-JUL-10 15:50:00 (MST-7)
Location: UNION CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Drifts of quarter sized hail covered the ground.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 19-JUL-10 15:50:00 to 19-JUL-10 15:50:00 (MST-7)
Location: STONEVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 70 mph.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 19-JUL-10 15:30:00 to 19-JUL-10 16:10:00 (MST-7)
Location: UNION CENTER
Magnitude: 51.00 MG
Property damage: 100.00K
Crop damage: 500.00K
Reported by: Mesonet

The combination of hail and wind broke windows and damaged siding in Union Center. Wheat and alfalfa crops were destroyed.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 19-JUL-10 15:45:00 to 19-JUL-10 15:45:00 (MST-7)
Location: UNION CENTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail around half inch size also accompanied the storm.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 19-JUL-10 15:55:00 to 19-JUL-10 15:55:00 (MST-7)
Location: ENNING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half inch size hail also accompanied the storm.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 19-JUL-10 16:15:00 to 19-JUL-10 16:20:00 (MST-7)
Location: WASTA
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Winds estimated at 70 mph blew away a storage building, tipped over a horse trailer, and blew down several trees.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 19-JUL-10 19:20:00 to 19-JUL-10 19:20:00 (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 BENNETT, SOUTH DAKOTA
From 19-JUL-10 17:54:00 to 19-JUL-10 17:54:00 (MST-7)
Location: VETAL
Magnitude: 2.50 
Property damage: 50.00K
Crop damage: 700.00K
Reported by: Trained Spotter

The combination of large hail and gusty winds damaged property and flattened a variety of crops. Over 1000 acres of corn were stripped.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 19-JUL-10 16:30:00 to 19-JUL-10 16:35:00 (MST-7)
Location: WALL
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in JACKSON, SOUTH DAKOTA
From 19-JUL-10 17:30:00 to 19-JUL-10 17:45:00 (MST-7)
Location: LONG VALLEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer