As an upper level trough approached during the late night and early morning hours, scattered post-frontal thunderstorms developed. Feeding off 1000-1500 J/kg elevated instability and effective-layer shear up to 50 knots, isolated storms produced considerable large hail.

Hail in HUTCHINSON, SOUTH DAKOTA
From 28-AUG-18 00:00:00 to 28-AUG-18 00:01:00 (CST-6)
Location: DIMOCK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report received through social media.

Hail in HUTCHINSON, SOUTH DAKOTA
From 28-AUG-18 00:15:00 to 28-AUG-18 00:16:00 (CST-6)
Location: NEW ELMS SPGS COLONY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Minor crop damage.

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:05:00 to 28-AUG-18 01:10:00 (CST-6)
Location: ELLIS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail stripped leaves from trees, seen on social media video.

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:12:00 to 28-AUG-18 01:15:00 (CST-6)
Location: ELLIS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:12:00 to 28-AUG-18 01:15:00 (CST-6)
Location: ELLIS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:14:00 to 28-AUG-18 01:16:00 (CST-6)
Location: ELLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:15:00 to 28-AUG-18 01:17:00 (CST-6)
Location: ELLIS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:19:00 to 28-AUG-18 01:22:00 (CST-6)
Location: WEST SIOUX FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:20:00 to 28-AUG-18 01:22:00 (CST-6)
Location: SIOUX FALLS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:20:00 to 28-AUG-18 01:22:00 (CST-6)
Location: SIOUX FALLS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:22:00 to 28-AUG-18 01:24:00 (CST-6)
Location: SIOUX FALLS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail size varied from quarter to golf ball.

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:23:00 to 28-AUG-18 01:26:00 (CST-6)
Location: SIOUX FALLS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Mainly quarter to half dollar size hail, with a few golf ball size stones.

Hail in MINNEHAHA, SOUTH DAKOTA
From 28-AUG-18 01:26:00 to 28-AUG-18 01:28:00 (CST-6)
Location: EAST SIOUX FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CHARLES MIX, SOUTH DAKOTA
From 28-AUG-18 01:39:00 to 28-AUG-18 01:40:00 (CST-6)
Location: WAGNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report of damage to crops and vehicles on social media.

Hail in CHARLES MIX, SOUTH DAKOTA
From 28-AUG-18 01:40:00 to 28-AUG-18 01:42:00 (CST-6)
Location: RAVINIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BON HOMME, SOUTH DAKOTA
From 28-AUG-18 02:16:00 to 28-AUG-18 02:18:00 (CST-6)
Location: SCOTLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCCOOK, SOUTH DAKOTA
From 28-AUG-18 02:30:00 to 28-AUG-18 02:31:00 (CST-6)
Location: STANLEY CORNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Mostly nickel size, but a few of quarter size. Time estimated from radar.

Hail in TURNER, SOUTH DAKOTA
From 28-AUG-18 02:39:00 to 28-AUG-18 02:44:00 (CST-6)
Location: PEARSONS CORNER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail accompanied by strong winds, speed unknown.