Several supercell thunderstorms that developed along a stationary front across central and northeast South Dakota brought very large hail up to the size of tennis balls, damaging winds up to 70 mph, along with a tornado.

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:25:00 to 24-JUN-09 19:25:00 (CST-6)
Location: JAMES
Magnitude: 1.75 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:35:00 to 24-JUN-09 19:35:00 (CST-6)
Location: JAMES
Magnitude: 1.75 
Reported by: Public

Hail in JONES, SOUTH DAKOTA
From 24-JUN-09 19:15:00 to 24-JUN-09 19:15:00 (CST-6)
Location: DRAPER
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 24-JUN-09 19:28:00 to 24-JUN-09 19:28:00 (CST-6)
Location: ROSLYN
Magnitude: 61.00 EG
Reported by: Trained Spotter

Seventy mph winds were estimated in Roslyn with no damage reported.

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:37:00 to 24-JUN-09 19:37:00 (CST-6)
Location: GROTON
Magnitude: 0.88 
Reported by: Law Enforcement

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:40:00 to 24-JUN-09 19:40:00 (CST-6)
Location: GROTON
Magnitude: 1.00 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:40:00 to 24-JUN-09 19:40:00 (CST-6)
Location: FERNEY
Magnitude: 1.75 
Reported by: Other Federal Agency

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 19:35:00 to 24-JUN-09 19:35:00 (CST-6)
Location: GRENVILLE
Magnitude: 0.88 
Reported by: Law Enforcement

A large amount of hail had fallen covering the roads and drifting in places.

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 20:18:00 to 24-JUN-09 20:18:00 (CST-6)
Location: LILY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in CLARK, SOUTH DAKOTA
From 24-JUN-09 13:01:00 to 24-JUN-09 13:01:00 (CST-6)
Location: CROCKER
Magnitude: 0.88 
Reported by: Trained Spotter

Dime to nickel size hail covered the ground up to 2 inches in spots.

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 18:14:00 to 24-JUN-09 18:14:00 (CST-6)
Location: HECLA
Magnitude: 0.75 
Reported by: Emergency Manager

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 18:20:00 to 24-JUN-09 18:20:00 (CST-6)
Location: WESTPORT
Magnitude: 1.00 
Reported by: COOP Observer

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 18:32:00 to 24-JUN-09 18:32:00 (CST-6)
Location: COLUMBIA
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 18:30:00 to 24-JUN-09 18:30:00 (CST-6)
Location: COLUMBIA
Magnitude: 0.88 
Reported by: NWS Employee

Hail in JONES, SOUTH DAKOTA
From 24-JUN-09 19:07:00 to 24-JUN-09 19:07:00 (CST-6)
Location: DRAPER
Magnitude: 1.50 
Reported by: Public

Hail in JONES, SOUTH DAKOTA
From 24-JUN-09 19:03:00 to 24-JUN-09 19:03:00 (CST-6)
Location: DRAPER
Magnitude: 1.75 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 19:10:00 to 24-JUN-09 19:10:00 (CST-6)
Location: PIERPONT
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in ROBERTS, SOUTH DAKOTA
From 24-JUN-09 20:15:00 to 24-JUN-09 20:15:00 (CST-6)
Location: SUMMIT
Magnitude: 1.00 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:40:00 to 24-JUN-09 19:40:00 (CST-6)
Location: GROTON
Magnitude: 1.75 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 20:05:00 to 24-JUN-09 20:05:00 (CST-6)
Location: BRISTOL
Magnitude: 2.50 
Reported by: Public

Tennis ball size hail dented several vehicles and caused significant crop damage.

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:30:00 to 24-JUN-09 19:30:00 (CST-6)
Location: FERNEY
Magnitude: 1.25 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 19:55:00 to 24-JUN-09 19:55:00 (CST-6)
Location: ANDOVER
Magnitude: 2.00 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 19:55:00 to 24-JUN-09 19:55:00 (CST-6)
Location: ANDOVER
Magnitude: 1.50 
Reported by: Public

Tornado in DAY, SOUTH DAKOTA
From 24-JUN-09 19:50:00 to 24-JUN-09 19:52:00 (CST-6)
Location: ANDOVER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tornado touched down briefly south of Andover with no damage reported.

Hail in CLARK, SOUTH DAKOTA
From 24-JUN-09 20:43:00 to 24-JUN-09 20:43:00 (CST-6)
Location: BRADLEY
Magnitude: 0.75 
Reported by: Law Enforcement

Hail in BROWN, SOUTH DAKOTA
From 24-JUN-09 19:45:00 to 24-JUN-09 19:45:00 (CST-6)
Location: GROTON
Magnitude: 2.50 
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 24-JUN-09 19:28:00 to 24-JUN-09 19:28:00 (CST-6)
Location: ROSLYN
Magnitude: 1.00 
Reported by: Trained Spotter