A long-lived supercell thunderstorm developed northwest of Rapid City and moved south-southeast along the eastern foothills. The storm produced a long swath of large hail from western and southern portions of Rapid City to near Fairburn. The storm weakened as it moved off the Black Hills east of Buffalo Gap. The largest hail fell from southwest Rapid City to Hermosa and to west of Fairburn.

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:20:00 to 02-JUN-19 11:35:00 (MST-7)
Location: RAPID CITY
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Public

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:22:00 to 02-JUN-19 11:25:00 (MST-7)
Location: RAPID CITY
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:24:00 to 02-JUN-19 11:24:00 (MST-7)
Location: ROCKERVILLE
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:25:00 to 02-JUN-19 11:25:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:30:00 to 02-JUN-19 11:30:00 (MST-7)
Location: RAPID CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:20:00 to 02-JUN-19 11:20:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Public

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:31:00 to 02-JUN-19 11:31:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:40:00 to 02-JUN-19 11:40:00 (MST-7)
Location: RAPID CITY
Magnitude: 2.25 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 12:00:00 to 02-JUN-19 12:00:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 12:40:00 to 02-JUN-19 12:40:00 (MST-7)
Location: HERMOSA
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 12:48:00 to 02-JUN-19 12:48:00 (MST-7)
Location: HERMOSA
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:00:00 to 02-JUN-19 13:00:00 (MST-7)
Location: HERMOSA
Magnitude: 2.50 
Crop damage: 0.00K
Reported by: Public

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:03:00 to 02-JUN-19 13:35:00 (MST-7)
Location: FAIRBURN
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail to ping-pong ball size fell for about 30 minutes.

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:06:00 to 02-JUN-19 13:06:00 (MST-7)
Location: FAIRBURN
Magnitude: 2.25 
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:20:00 to 02-JUN-19 13:20:00 (MST-7)
Location: FAIRBURN
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:38:00 to 02-JUN-19 13:38:00 (MST-7)
Location: FAIRBURN
Magnitude: 2.50 
Crop damage: 0.00K
Reported by: Public

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:55:00 to 02-JUN-19 13:55:00 (MST-7)
Location: FAIRBURN
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 14:42:00 to 02-JUN-19 14:42:00 (MST-7)
Location: BUFFALO GAP
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CUSTER, SOUTH DAKOTA
From 02-JUN-19 13:30:00 to 02-JUN-19 14:00:00 (MST-7)
Location: FAIRBURN
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Park/Forest Service

Golf ball sized hail fell for a half an hour at the Custer State Park east entrance and airport.

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:18:00 to 02-JUN-19 11:18:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:20:00 to 02-JUN-19 11:20:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in PENNINGTON, SOUTH DAKOTA
From 02-JUN-19 11:15:00 to 02-JUN-19 11:15:00 (MST-7)
Location: RAPID CITY
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Trained Spotter