Severe thunderstorms developed across southwestern South Dakota and tracked eastward into south central South Dakota. These storms produced wind gusts to 70 mph, large hail, and heavy rain.

Thunderstorm Wind in FALL RIVER, SOUTH DAKOTA
From 03-AUG-10 12:33:00 to 03-AUG-10 12:33:00 (MST-7)
Location: EDGEMONT
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds downed trees and power poles in Edgemont, with electric service out for as long as 24 hours.

Thunderstorm Wind in FALL RIVER, SOUTH DAKOTA
From 03-AUG-10 12:35:00 to 03-AUG-10 12:35:00 (MST-7)
Location: EDGEMONT
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in CUSTER, SOUTH DAKOTA
From 03-AUG-10 13:06:00 to 03-AUG-10 13:06:00 (MST-7)
Location: BUFFALO GAP
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CUSTER, SOUTH DAKOTA
From 03-AUG-10 13:06:00 to 03-AUG-10 13:06:00 (MST-7)
Location: BUFFALO GAP
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 FALL RIVER, SOUTH DAKOTA
From 03-AUG-10 13:00:00 to 03-AUG-10 13:00:00 (MST-7)
Location: ANGOSTURA RESERVOIR
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tree were uprooted and a fifth wheel camper trailer was blown over at the Hat Creek Campground.

Thunderstorm Wind in OGLALA LAKOTA, SOUTH DAKOTA
From 03-AUG-10 14:29:00 to 03-AUG-10 14:29:00 (MST-7)
Location: KYLE
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 JACKSON, SOUTH DAKOTA
From 03-AUG-10 15:05:00 to 03-AUG-10 15:05:00 (MST-7)
Location: KADOKA
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in OGLALA LAKOTA, SOUTH DAKOTA
From 03-AUG-10 14:35:00 to 03-AUG-10 14:35:00 (MST-7)
Location: PORCUPINE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts to 60 mph were reported.

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 03-AUG-10 15:10:00 to 03-AUG-10 15:10:00 (MST-7)
Location: KADOKA
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 03-AUG-10 17:00:00 to 03-AUG-10 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 to 60 mph were estimated.

Thunderstorm Wind in MELLETTE, SOUTH DAKOTA
From 03-AUG-10 17:30:00 to 03-AUG-10 17:30:00 (CST-6)
Location: WOOD
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs were blown down.

Thunderstorm Wind in TODD, SOUTH DAKOTA
From 03-AUG-10 17:35:00 to 03-AUG-10 17:35:00 (CST-6)
Location: OKREEK
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MELLETTE, SOUTH DAKOTA
From 03-AUG-10 17:40:00 to 03-AUG-10 17:40:00 (CST-6)
Location: WOOD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts to 70 mph were reported.

Thunderstorm Wind in OGLALA LAKOTA, SOUTH DAKOTA
From 03-AUG-10 14:40:00 to 03-AUG-10 14:40:00 (MST-7)
Location: PORCUPINE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in JACKSON, SOUTH DAKOTA
From 03-AUG-10 14:32:00 to 03-AUG-10 14:32:00 (MST-7)
Location: INTERIOR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated wind gusts of 60 mph were reported.