Thunderstorms fired along a slowly moving cold front during the early evening. Initially discrete, strong updrafts with 2000-2500 J/kg MLCAPE and deep-layer shear around 50 knots resulted in supercells, which later congealed into a slowly progressing line.  With most storms forming slightly elevated behind the boundary, most severe weather was in the form of large hail.

Hail in MINER, SOUTH DAKOTA
From 08-JUN-20 22:04:00 to 08-JUN-20 22:05:00 (CST-6)
Location: FEDORA
Magnitude: 1.00 
Reported by: Trained Spotter

Flash Flood in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 23:30:00 to 09-JUN-20 01:30:00 (CST-6)
Location: RAVINIA
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The eastbound lane of South Dakota Highway 46 was inundated by 6 to 8 inches of flowing water. Property damage costs are rough estimates.

Tornado in MINER, SOUTH DAKOTA
From 08-JUN-20 22:34:00 to 08-JUN-20 22:35:00 (CST-6)
Location: ARGONNE
Tornado F-scale: EFU
Reported by: Trained Spotter

A spotter observed a brief touchdown in an open field. No damage was reported.

Flash Flood in HUTCHINSON, SOUTH DAKOTA
From 08-JUN-20 21:59:00 to 08-JUN-20 23:15:00 (CST-6)
Location: PARKSTON
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The creek passing through the backyard was out of banks with water flowing into basement. Property damage costs are rough estimates.

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 22:03:00 to 08-JUN-20 22:06:00 (CST-6)
Location: WAGNER
Magnitude: 1.75 
Property damage: 5.00K
Reported by: Public

Cars damaged due to hail up to golf ball size on the west side of Wagner. Property damage costs are rough estimates.

Flash Flood in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 22:00:00 to 09-JUN-20 01:00:00 (CST-6)
Location: MARTY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water was flowing from 8 to 10 inches deep across 388th Avenue from two miles north of Marty into town. Some residents of Marty were evacuated due to flood waters.  Rainfall in the area over just a few hours totaled 3.01 inches near Platte and 2.75 inches near Pickstown. Property damage costs are rough estimates.

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 20:52:00 to 08-JUN-20 20:54:00 (CST-6)
Location: WAGNER
Magnitude: 2.00 
Reported by: Law Enforcement

Funnel Cloud in MINER, SOUTH DAKOTA
From 08-JUN-20 22:04:00 to 08-JUN-20 22:04:00 (CST-6)
Location: ROSWELL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large funnel cloud was reported by a trained spotter.

Funnel Cloud in DOUGLAS, SOUTH DAKOTA
From 08-JUN-20 20:20:00 to 08-JUN-20 20:20:00 (CST-6)
Location: HILLSIDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief funnel cloud was observed about 10 miles northwest of Tripp.

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 20:43:00 to 08-JUN-20 20:45:00 (CST-6)
Location: MARTY
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 20:53:00 to 08-JUN-20 20:55:00 (CST-6)
Location: WAGNER
Magnitude: 2.00 
Reported by: Public

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 21:12:00 to 08-JUN-20 21:14:00 (CST-6)
Location: WAGNER
Magnitude: 1.25 
Reported by: Public

Hail in DAVISON, SOUTH DAKOTA
From 08-JUN-20 21:00:00 to 08-JUN-20 21:02:00 (CST-6)
Location: MITCHELL
Magnitude: 1.75 
Crop damage: 300.00K
Reported by: Trained Spotter

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in DOUGLAS, SOUTH DAKOTA
From 08-JUN-20 22:28:00 to 08-JUN-20 22:30:00 (CST-6)
Location: DELMONT
Magnitude: 1.00 
Crop damage: 11.00K
Reported by: Emergency Manager

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 20:50:00 to 08-JUN-20 20:52:00 (CST-6)
Location: WAGNER
Magnitude: 2.50 
Crop damage: 63.00K
Reported by: Social Media

Crop damages are estimates from insured losses. Information provided by the United States Department of Agriculture.

Hail in CHARLES MIX, SOUTH DAKOTA
From 08-JUN-20 20:58:00 to 08-JUN-20 21:00:00 (CST-6)
Location: WAGNER ARPT
Magnitude: 2.50 
Crop damage: 150.00K
Reported by: Emergency Manager

Crop damages are estimates from insured losses. Information provided by the United States Department of Agriculture.