A late day frontal zone moved into an unstable airmass with up to 2000 J/kg MUCAPE and sparked several severe thunderstorms, which produced large hail up to golf ball size. In addition, a couple of brief tornadic spin ups occurred across Kingsbury County, but resulted in no damage.

Hail in AURORA, SOUTH DAKOTA
From 10-AUG-23 16:43:00 to 10-AUG-23 16:44:00 (CST-6)
Location: AURORA CENTER
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DAVISON, SOUTH DAKOTA
From 10-AUG-23 17:35:00 to 10-AUG-23 17:37:00 (CST-6)
Location: MT VERNON
Magnitude: 1.00 
Reported by: Public

Hail in HANSON, SOUTH DAKOTA
From 10-AUG-23 18:36:00 to 10-AUG-23 18:38:00 (CST-6)
Location: ROCKPORT
Magnitude: 1.00 
Reported by: Public

Hail in YANKTON, SOUTH DAKOTA
From 10-AUG-23 19:46:00 to 10-AUG-23 19:48:00 (CST-6)
Location: LESTERVILLE
Magnitude: 1.75 
Crop damage: 230.00K
Reported by: Emergency Manager

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

Hail in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 18:45:00 to 10-AUG-23 18:46:00 (CST-6)
Location: DE SMET
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 19:01:00 to 10-AUG-23 19:03:00 (CST-6)
Location: LAKE PRESTON ARPT
Magnitude: 1.50 
Reported by: Social Media

Hail in LAKE, SOUTH DAKOTA
From 10-AUG-23 19:44:00 to 10-AUG-23 19:46:00 (CST-6)
Location: RAMONA
Magnitude: 1.25 
Reported by: Storm Chaser

Hail in BEADLE, SOUTH DAKOTA
From 10-AUG-23 16:48:00 to 10-AUG-23 16:50:00 (CST-6)
Location: BONILLA
Magnitude: 1.00 
Reported by: Social Media

Photo was submitted with largest hailstones at quarter size.

Hail in DAVISON, SOUTH DAKOTA
From 10-AUG-23 17:43:00 to 10-AUG-23 17:45:00 (CST-6)
Location: BETTS
Magnitude: 1.00 
Reported by: Trained Spotter

Hail varied from pea to quarter size, with most at quarter size.

Hail in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 18:44:00 to 10-AUG-23 18:46:00 (CST-6)
Location: DE SMET
Magnitude: 0.75 
Reported by: Public

Hail in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 18:45:00 to 10-AUG-23 18:47:00 (CST-6)
Location: DE SMET
Magnitude: 0.75 
Reported by: Public

Hail in MCCOOK, SOUTH DAKOTA
From 10-AUG-23 19:06:00 to 10-AUG-23 19:08:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 1.50 
Crop damage: 1.00K
Reported by: Social Media

Hail in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 18:38:00 to 10-AUG-23 18:39:00 (CST-6)
Location: DE SMET MUNI ARPT
Magnitude: 1.75 
Crop damage: 4.00K
Reported by: Public

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

Hail in TURNER, SOUTH DAKOTA
From 10-AUG-23 20:04:00 to 10-AUG-23 20:06:00 (CST-6)
Location: MONROE
Magnitude: 1.25 
Reported by: Public

Hail varied from quarter to half-dollar size.

Hail in LAKE, SOUTH DAKOTA
From 10-AUG-23 20:06:00 to 10-AUG-23 20:08:00 (CST-6)
Location: MADISON MUNI ARPT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LINCOLN, SOUTH DAKOTA
From 10-AUG-23 20:27:00 to 10-AUG-23 20:29:00 (CST-6)
Location: TEA
Magnitude: 0.75 
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 10-AUG-23 20:49:00 to 10-AUG-23 20:50:00 (CST-6)
Location: SOUTH SIOUX FALLS
Magnitude: 0.75 
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 10-AUG-23 20:51:00 to 10-AUG-23 20:52:00 (CST-6)
Location: SOUTH SIOUX FALLS
Magnitude: 0.75 
Reported by: Social Media

Tornado in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 19:10:00 to 10-AUG-23 19:12:00 (CST-6)
Location: ERWIN
Tornado F-scale: EFU
Reported by: Public

A tornado spun up initially around one-third mile southeast of the intersection of 202nd Street and 442nd Aveune. A video documented the tornado as it tracked east-northeast across open fields for around one mile before lifting just south of 202nd Street approximately one-half mile east of 443rd Avenue.  The tornado caused no known damage to incur a rating. The average path width was 20 yards.

Tornado in KINGSBURY, SOUTH DAKOTA
From 10-AUG-23 18:41:00 to 10-AUG-23 18:42:00 (CST-6)
Location: DE SMET MUNI ARPT
Tornado F-scale: EFU
Reported by: Public

A report was relayed through De Smet Fire of a brief tornado which touched down north of 201st Street just south of Mud Lake.  The tornado tracked eastward across open grass and marsh lands for around one-half mile before reaching the southern portion of Mud Lake where the tornado was observed pulling up water shortly before dissipating.  The average path width was 20 yards. The tornado did not cause any damage to allow designation of a rating.