Severe thunderstorms moved from northeastern Wyoming across the northern Black Hills and onto the plains to the east, producing golf ball sized hail and strong wind gusts.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 05-AUG-08 18:30:00 to 05-AUG-08 18:30:00 (MST-7)
Location: STURGIS MUNI ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A man was injured when he was struck by a pole holding a large banner at a convenience store east of Sturgis.

Lightning in MEADE, SOUTH DAKOTA
From 05-AUG-08 18:25:00 to 05-AUG-08 18:25:00 (MST-7)
Location: STURGIS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Three people were injured by lightning at the Glencoe Camp Resort ticket booth.

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:44:00 to 05-AUG-08 17:44:00 (MST-7)
Location: SPEARFISH
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:44:00 to 05-AUG-08 17:44:00 (MST-7)
Location: SPEARFISH
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:50:00 to 05-AUG-08 17:50:00 (MST-7)
Location: SPEARFISH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 18:28:00 to 05-AUG-08 18:35:00 (MST-7)
Location: LEAD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few automobiles were damaged by large hailstones.

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 18:37:00 to 05-AUG-08 18:50:00 (MST-7)
Location: LEAD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 05-AUG-08 19:20:00 to 05-AUG-08 19:20:00 (MST-7)
Location: RAPID CITY
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 05-AUG-08 19:19:00 to 05-AUG-08 19:19:00 (MST-7)
Location: (RCA)ELLSWORTH AFB
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 05-AUG-08 19:20:00 to 05-AUG-08 19:20:00 (MST-7)
Location: ELLSWORTH AFB
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 05-AUG-08 19:26:00 to 05-AUG-08 19:26:00 (MST-7)
Location: (RAP)RAPID CITY ARPT
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in CUSTER, SOUTH DAKOTA
From 05-AUG-08 19:15:00 to 05-AUG-08 19:15:00 (MST-7)
Location: CUSTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CUSTER, SOUTH DAKOTA
From 05-AUG-08 19:50:00 to 05-AUG-08 19:50:00 (MST-7)
Location: HERMOSA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 05-AUG-08 20:30:00 to 05-AUG-08 20:30:00 (MST-7)
Location: WALL
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Thunderstorm Wind in CUSTER, SOUTH DAKOTA
From 05-AUG-08 19:45:00 to 05-AUG-08 19:45:00 (MST-7)
Location: JEWEL CAVE NATL MON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 05-AUG-08 19:45:00 to 05-AUG-08 19:45:00 (MST-7)
Location: NEW UNDERWOOD
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds ripped the roof off a mobile home.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 05-AUG-08 19:25:00 to 05-AUG-08 19:25:00 (MST-7)
Location: ELLSWORTH AFB
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:25:00 to 05-AUG-08 17:25:00 (MST-7)
Location: SPEARFISH
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:25:00 to 05-AUG-08 17:25:00 (MST-7)
Location: SPEARFISH
Magnitude: 56.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:30:00 to 05-AUG-08 17:30:00 (MST-7)
Location: SPEARFISH
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail was 12 inches deep on road and accumulated two feet deep in ditches. The combination of hail and strong winds broke windows and siding on a house.

Hail in LAWRENCE, SOUTH DAKOTA
From 05-AUG-08 17:33:00 to 05-AUG-08 17:33:00 (MST-7)
Location: SPEARFISH
Magnitude: 1.25 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wind gusts were measured at 54 mph.