A long-lived supercell thunderstorm developed along a warm front over extreme southeastern Montana and tracked southeastward across western South Dakota during the late afternoon and evening hours. The storm produced large hail and very strong winds, especially as it tracked across Butte County, southeastern Meade County, northeastern Pennington County, and western Haakon County. There were many reports of wind damage and wind gusts estimated to 100 mph.

Hail in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 19:55:00 to 08-JUL-03 19:55:00 (MST)
Location: CREIGHTON
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 20:05:00 to 08-JUL-03 20:05:00 (MST)
Location: QUINN
Magnitude: 80 EG
Property damage: 0
Crop damage: 0
Reported by: FIRE DEPT/RESCUE SQUAD

Power poles were downed by winds.

Hail in HAAKON, SOUTH DAKOTA
From 08-JUL-03 20:30:00 to 08-JUL-03 20:30:00 (MST)
Location: PHILIP
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: LAW ENFORCEMENT

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 17:45:00 to 08-JUL-03 17:45:00 (MST)
Location: UNION CENTER
Magnitude: 1.75 
Property damage: 0
Crop damage: 0
Reported by: GENERAL PUBLIC

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 08-JUL-03 19:30:00 to 08-JUL-03 19:30:00 (MST)
Location: FAITH
Magnitude: 52 EG
Property damage: 0
Crop damage: 0
Reported by: GENERAL PUBLIC

Hail in HAAKON, SOUTH DAKOTA
From 08-JUL-03 20:05:00 to 08-JUL-03 20:05:00 (MST)
Location: PHILIP
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 20:05:00 to 08-JUL-03 20:05:00 (MST)
Location: QUINN
Magnitude: 87 EG
Property damage: 200K
Crop damage: 0
Reported by: TRAINED SPOTTER

Very strong winds destroyed an airplane hangar, flipped over farm equipment and a horse trailer, uprooted trees, and caused some damage to other buildings in the area.

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 18:55:00 to 08-JUL-03 19:05:00 (MST)
Location: ENNING
Magnitude: 1.50 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 19:00:00 to 08-JUL-03 19:00:00 (MST)
Location: ENNING
Magnitude: 2.50 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Large hail broke skylights in a house.

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 19:05:00 to 08-JUL-03 19:05:00 (MST)
Location: UNION CENTER
Magnitude: 1.50 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 19:25:00 to 08-JUL-03 19:25:00 (MST)
Location: WHITE OWL
Magnitude: 0.75 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 19:25:00 to 08-JUL-03 19:25:00 (MST)
Location: CREIGHTON
Magnitude: 1.75 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in BUTTE, SOUTH DAKOTA
From 08-JUL-03 16:50:00 to 08-JUL-03 16:50:00 (MST)
Location: BELLE FOURCHE
Magnitude: 1.75 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in BUTTE, SOUTH DAKOTA
From 08-JUL-03 17:05:00 to 08-JUL-03 17:05:00 (MST)
Location: BELLE FOURCHE
Magnitude: 2.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 20:10:00 to 08-JUL-03 20:10:00 (MST)
Location: CREIGHTON
Magnitude: 52 EG
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in BUTTE, SOUTH DAKOTA
From 08-JUL-03 17:42:00 to 08-JUL-03 17:42:00 (MST)
Location: NEWELL
Magnitude: 61 EG
Property damage: 0
Crop damage: 0
Reported by: LAW ENFORCEMENT

Power lines were downed by the winds.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 08-JUL-03 17:45:00 to 08-JUL-03 17:45:00 (MST)
Location: STONEVILLE
Magnitude: 70 EG
Property damage: 25K
Reported by: TRAINED SPOTTER

Strong winds ripped an 80 foot section off a barn roof. Eight foot high poles were also ripped from the ground.

Hail in BUTTE, SOUTH DAKOTA
From 08-JUL-03 17:40:00 to 08-JUL-03 17:40:00 (MST)
Location: NEWELL
Magnitude: 0.75 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Hail in MEADE, SOUTH DAKOTA
From 08-JUL-03 19:25:00 to 08-JUL-03 19:25:00 (MST)
Location: WHITE OWL
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 08-JUL-03 19:25:00 to 08-JUL-03 19:25:00 (MST)
Location: CREIGHTON
Magnitude: 52 EG
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

Thunderstorm Wind in HAAKON, SOUTH DAKOTA
From 08-JUL-03 20:30:00 to 08-JUL-03 20:30:00 (MST)
Location: PHILIP
Magnitude: 70 EG
Property damage: 100K
Crop damage: 0
Reported by: LAW ENFORCEMENT

Strong winds destroyed a Quonset barn and blew a trailer off its blocks. Several large round hay bales were blown over a fence.