Widespread severe storms spread from north of Interstate 90 to south during the afternoon and evening of August 9th. Numerous reports of large hail and damaging winds were received, and there was one brief tornado.

Hail in AURORA, SOUTH DAKOTA
From 09-AUG-15 15:13:00 to 09-AUG-15 15:13:00 (CST-6)
Location: STORLA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail from smooth quarter size to jagged ping pong ball size was observed.

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 15:53:00 to 09-AUG-15 15:53:00 (CST-6)
Location: WESSINGTON SPGS
Magnitude: 1.00 
Property damage: 0.00K
Reported by: Trained Spotter

Large hail, wind driven, shredded corn crops.

Thunderstorm Wind in DAVISON, SOUTH DAKOTA
From 09-AUG-15 15:55:00 to 09-AUG-15 15:55:00 (CST-6)
Location: (MHE)MITCHELL ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in BEADLE, SOUTH DAKOTA
From 09-AUG-15 16:19:00 to 09-AUG-15 16:19:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including branches blown down.

Hail in HANSON, SOUTH DAKOTA
From 09-AUG-15 16:30:00 to 09-AUG-15 16:30:00 (CST-6)
Location: FULTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 16:30:00 to 09-AUG-15 16:30:00 (CST-6)
Location: LANE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in SANBORN, SOUTH DAKOTA
From 09-AUG-15 16:39:00 to 09-AUG-15 16:39:00 (CST-6)
Location: WOONSOCKET
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in SANBORN, SOUTH DAKOTA
From 09-AUG-15 16:42:00 to 09-AUG-15 16:42:00 (CST-6)
Location: CUTHBERT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including branches blown down.

Hail in MCCOOK, SOUTH DAKOTA
From 09-AUG-15 16:53:00 to 09-AUG-15 16:53:00 (CST-6)
Location: SPENCER
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Drought Monitor

Large hail caused an unknown amount of damage to vehicles. The hail was accompanied by estimated 45 mph wind gusts.

Thunderstorm Wind in KINGSBURY, SOUTH DAKOTA
From 09-AUG-15 16:55:00 to 09-AUG-15 16:55:00 (CST-6)
Location: DE SMET
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including up to 2.5 inch diameter branches blown down.

Hail in HANSON, SOUTH DAKOTA
From 09-AUG-15 17:00:00 to 09-AUG-15 17:00:00 (CST-6)
Location: ROCKPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MCCOOK, SOUTH DAKOTA
From 09-AUG-15 17:05:00 to 09-AUG-15 17:05:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including branches blown down.

Thunderstorm Wind in KINGSBURY, SOUTH DAKOTA
From 09-AUG-15 17:14:00 to 09-AUG-15 17:14:00 (CST-6)
Location: HETLAND
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm winds caused tree damage, including branches blown down.

Hail in MCCOOK, SOUTH DAKOTA
From 09-AUG-15 17:31:00 to 09-AUG-15 17:31:00 (CST-6)
Location: CANISTOTA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HANSON, SOUTH DAKOTA
From 09-AUG-15 17:36:00 to 09-AUG-15 17:36:00 (CST-6)
Location: ALEXANDRIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail was accompanied by damaging winds.

Thunderstorm Wind in HANSON, SOUTH DAKOTA
From 09-AUG-15 17:36:00 to 09-AUG-15 17:36:00 (CST-6)
Location: ALEXANDRIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including 1.5 inch diameter branches blown down. The winds were accompanied by large hail.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 09-AUG-15 17:40:00 to 09-AUG-15 17:40:00 (CST-6)
Location: MENNO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds caused tree damage. The winds were accompanied by penny size hail.

Hail in HUTCHINSON, SOUTH DAKOTA
From 09-AUG-15 17:40:00 to 09-AUG-15 17:40:00 (CST-6)
Location: MENNO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Penny size hail was accompanied by damaging winds.

Thunderstorm Wind in TURNER, SOUTH DAKOTA
From 09-AUG-15 18:00:00 to 09-AUG-15 18:00:00 (CST-6)
Location: PEARSONS CORNER
Magnitude: 52.00 EG
Property damage: 0.00K
Reported by: Public

Thunderstorm winds caused an unknown amount of crop damage.

Hail in HUTCHINSON, SOUTH DAKOTA
From 09-AUG-15 18:00:00 to 09-AUG-15 18:00:00 (CST-6)
Location: MENNO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LAKE, SOUTH DAKOTA
From 09-AUG-15 18:00:00 to 09-AUG-15 18:00:00 (CST-6)
Location: SMITHS PARK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including several trees blown down.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 09-AUG-15 18:00:00 to 09-AUG-15 18:00:00 (CST-6)
Location: MAYFIELD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including large trees uprooted.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 09-AUG-15 18:12:00 to 09-AUG-15 18:12:00 (CST-6)
Location: IRENE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including numerous branches blown down.

Thunderstorm Wind in MOODY, SOUTH DAKOTA
From 09-AUG-15 18:17:00 to 09-AUG-15 18:17:00 (CST-6)
Location: TRENT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds caused tree damage, including large branches blown down.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 09-AUG-15 18:54:00 to 09-AUG-15 18:54:00 (CST-6)
Location: ALCESTER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds cause tree damage, including trees snapped off.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 09-AUG-15 20:04:00 to 09-AUG-15 20:04:00 (CST-6)
Location: MECKLING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage. The winds were accompanied by penny size hail.

Hail in CLAY, SOUTH DAKOTA
From 09-AUG-15 20:04:00 to 09-AUG-15 20:04:00 (CST-6)
Location: MECKLING
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was accompanied by damaging winds.

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 14:30:00 to 09-AUG-15 14:30:00 (CST-6)
Location: WESSINGTON SPGS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 14:32:00 to 09-AUG-15 14:32:00 (CST-6)
Location: CROW LAKE
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Public

Large hail caused an unknown amount of damage to vehicles.

Tornado in AURORA, SOUTH DAKOTA
From 09-AUG-15 14:35:00 to 09-AUG-15 14:36:00 (CST-6)
Location: STORLA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief tornado, a landspout, caused no reported damage.

Thunderstorm Wind in AURORA, SOUTH DAKOTA
From 09-AUG-15 14:45:00 to 09-AUG-15 14:45:00 (CST-6)
Location: STORLA
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down up to 4 inch diameter trees and branches, and also blew down power lines.

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 14:50:00 to 09-AUG-15 14:50:00 (CST-6)
Location: CROW LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in JERAULD, SOUTH DAKOTA
From 09-AUG-15 14:52:00 to 09-AUG-15 14:52:00 (CST-6)
Location: CROW LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public