A warm front along with very unstable air resulted in numerous severe thunderstorms across mainly northeast South Dakota during the late afternoon and evening hours.

Hail in DAY, SOUTH DAKOTA
From 10-AUG-16 15:01:00 to 10-AUG-16 15:01:00 (CST-6)
Location: WEBSTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DAY, SOUTH DAKOTA
From 10-AUG-16 15:25:00 to 10-AUG-16 15:25:00 (CST-6)
Location: WEBSTER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in DAY, SOUTH DAKOTA
From 10-AUG-16 15:50:00 to 10-AUG-16 15:50:00 (CST-6)
Location: GRENVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in DAY, SOUTH DAKOTA
From 10-AUG-16 16:00:00 to 10-AUG-16 16:00:00 (CST-6)
Location: WEBSTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ROBERTS, SOUTH DAKOTA
From 10-AUG-16 17:00:00 to 10-AUG-16 17:00:00 (CST-6)
Location: SUMMIT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CAMPBELL, SOUTH DAKOTA
From 10-AUG-16 17:03:00 to 10-AUG-16 17:03:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.75 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 17:33:00 to 10-AUG-16 17:33:00 (CST-6)
Location: HOSMER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in MCPHERSON, SOUTH DAKOTA
From 10-AUG-16 17:55:00 to 10-AUG-16 17:55:00 (CST-6)
Location: HILLSVIEW
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WALWORTH, SOUTH DAKOTA
From 10-AUG-16 18:01:00 to 10-AUG-16 18:01:00 (CST-6)
Location: MOBRIDGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in WALWORTH, SOUTH DAKOTA
From 10-AUG-16 18:05:00 to 10-AUG-16 18:05:00 (CST-6)
Location: MOBRIDGE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCPHERSON, SOUTH DAKOTA
From 10-AUG-16 18:23:00 to 10-AUG-16 18:23:00 (CST-6)
Location: HILLSVIEW
Magnitude: 1.00 
Reported by: Public

Quarter size hail left dents in the vehicle.

Hail in POTTER, SOUTH DAKOTA
From 10-AUG-16 19:12:00 to 10-AUG-16 19:12:00 (CST-6)
Location: GORMAN
Magnitude: 1.00 
Reported by: Public

Quarter size hail caused some crop damage.

Hail in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 20:45:00 to 10-AUG-16 20:45:00 (CST-6)
Location: MINA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 10-AUG-16 15:17:00 to 10-AUG-16 15:17:00 (CST-6)
Location: ANDOVER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Sixty mph winds were estimated.

Hail in DAY, SOUTH DAKOTA
From 10-AUG-16 15:35:00 to 10-AUG-16 15:35:00 (CST-6)
Location: PIERPONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 10-AUG-16 15:15:00 to 10-AUG-16 15:15:00 (CST-6)
Location: PIERPONT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 10-AUG-16 16:03:00 to 10-AUG-16 16:03:00 (CST-6)
Location: WAUBAY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 10-AUG-16 16:58:00 to 10-AUG-16 16:58:00 (CST-6)
Location: SUMMIT
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in GRANT, SOUTH DAKOTA
From 10-AUG-16 17:15:00 to 10-AUG-16 17:15:00 (CST-6)
Location: TWIN BROOKS
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in GRANT, SOUTH DAKOTA
From 10-AUG-16 17:37:00 to 10-AUG-16 17:37:00 (CST-6)
Location: MILBANK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 20:20:00 to 10-AUG-16 20:20:00 (CST-6)
Location: CRAVEN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 20:30:00 to 10-AUG-16 20:30:00 (CST-6)
Location: CRAVEN
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 20:40:00 to 10-AUG-16 20:40:00 (CST-6)
Location: MINA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Seventy mph winds were estimated.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 10-AUG-16 20:51:00 to 10-AUG-16 20:51:00 (CST-6)
Location: RICHMOND
Magnitude: 65.00 MG
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 10-AUG-16 21:00:00 to 10-AUG-16 21:00:00 (CST-6)
Location: MELLETTE
Magnitude: 63.00 MG
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 10-AUG-16 21:05:00 to 10-AUG-16 21:05:00 (CST-6)
Location: NORTHVILLE
Magnitude: 61.00 EG
Reported by: Law Enforcement

Seventy mph winds were estimated.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 10-AUG-16 20:40:00 to 10-AUG-16 20:40:00 (CST-6)
Location: MINA
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated seventy mph winds brought many large tree branches down.

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 10-AUG-16 21:28:00 to 10-AUG-16 21:28:00 (CST-6)
Location: IONA
Magnitude: 56.00 EG
Reported by: Public

Sixty-five mph winds were estimated.

Hail in POTTER, SOUTH DAKOTA
From 10-AUG-16 18:44:00 to 10-AUG-16 18:44:00 (CST-6)
Location: GORMAN
Magnitude: 1.75 
Reported by: Public