A severe thunderstorm developed over the eastern slopes of the central Black Hills and tracked northeastward onto the plains. The storm produced large hail and eventually formed into a line of storms with strong wind gusts as it moved across the plains. A tornado developed as the storm moved north of Hermosa; downing trees and power poles, damaging some homes, and destroying a couple of outbuildings.

Hail in CUSTER, SOUTH DAKOTA
From 13-JUN-16 15:05:00 to 13-JUN-16 15:10:00 (MST-7)
Location: HERMOSA
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CUSTER, SOUTH DAKOTA
From 13-JUN-16 15:01:00 to 13-JUN-16 15:04:00 (MST-7)
Location: CUSTER
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Park/Forest Service

Ping pong ball sized hail fell at the Custer State Park headquarters.

Hail in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 15:25:00 to 13-JUN-16 15:25:00 (MST-7)
Location: (RAP)RAPID CITY ARPT
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 15:33:00 to 13-JUN-16 15:33:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Social Media

Hail in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 15:40:00 to 13-JUN-16 15:45:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: NWS Employee

Tornado in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 15:22:00 to 13-JUN-16 15:34:00 (MST-7)
Location: HAYWARD
Tornado F-scale: EF2
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down about three miles northwest of Hermosa and tracked northeastward for about 12 minutes, dissipating about six miles northeast of Hermosa. Numerous pine trees were snapped along Murphy Road where the tornado initially formed. Several power poles were snapped where it crossed Highway 79. Several homes were badly damaged and many outbuildings were destroyed as the tornado passed through the Spring Creek Acres subdivision.

Thunderstorm Wind in MEADE, SOUTH DAKOTA
From 13-JUN-16 15:45:00 to 13-JUN-16 15:45:00 (MST-7)
Location: (RCA)ELLSWORTH AFB
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Other Federal Agency

An Ellsworth Air Force Base weather forecaster estimated wind gusts reached 80 mph.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 16:00:00 to 13-JUN-16 16:00:00 (MST-7)
Location: NEW UNDERWOOD
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 16:10:00 to 13-JUN-16 16:10:00 (MST-7)
Location: SCENIC
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Lightning in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 15:41:00 to 13-JUN-16 15:41:00 (MST-7)
Location: RAPID CITY
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Lightning struck the top of a pickup truck and started a fire in the cab. The bolt also struck the ground, causing pieces of asphalt to hit the truck. The driver was uninjured.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 16:30:00 to 13-JUN-16 16:40:00 (MST-7)
Location: WICKSVILLE
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm Wind in CUSTER, SOUTH DAKOTA
From 13-JUN-16 14:55:00 to 13-JUN-16 14:55:00 (MST-7)
Location: CUSTER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous large pine trees were snapped and uprooted in an area about 100 yards wide.

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 16:03:00 to 13-JUN-16 16:03:00 (MST-7)
Location: (RAP)RAPID CITY ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Thunderstorm Wind in PENNINGTON, SOUTH DAKOTA
From 13-JUN-16 16:58:00 to 13-JUN-16 16:58:00 (MST-7)
Location: WALL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS