Thunderstorms produced a variety of severe weather and flash flooding in much of southeast South Dakota from late morning through the afternoon and into the early evening of June 26th. The first reports were mostly large hail and mainly north of Interstate 90, but by early evening the storms had also spread south of the interstate, and produced a greater variety of severe weather.

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:27:00 to 26-JUN-10 16:27:00 (CST-6)
Location: HURON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in HUTCHINSON, SOUTH DAKOTA
From 26-JUN-10 16:27:00 to 26-JUN-10 16:28:00 (CST-6)
Location: WOLF CREEK
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief tornado caused no reported damage.

Thunderstorm Wind in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:27:00 to 26-JUN-10 16:27:00 (CST-6)
Location: HURON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused an unknown amount of tree damage.

Hail in MINER, SOUTH DAKOTA
From 26-JUN-10 16:30:00 to 26-JUN-10 16:30:00 (CST-6)
Location: FEDORA
Magnitude: 2.50 
Reported by: Trained Spotter

Tennis ball size hail caused an unknown amount of damage to vehicles, windows, and crops. The hail was accompanied by estimated 50 mph wind gusts and heavy rain.

Hail in MCCOOK, SOUTH DAKOTA
From 26-JUN-10 16:26:00 to 26-JUN-10 16:26:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DOUGLAS, SOUTH DAKOTA
From 26-JUN-10 15:19:00 to 26-JUN-10 15:19:00 (CST-6)
Location: DELMONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:18:00 to 26-JUN-10 16:18:00 (CST-6)
Location: HURON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Large hail up to baseball size consisted mostly of smaller stones.

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:24:00 to 26-JUN-10 16:24:00 (CST-6)
Location: (HON)HURON ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:25:00 to 26-JUN-10 18:00:00 (CST-6)
Location: (HON)HURON ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flash flooding of numerous roads in the city of Huron.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:15:00 to 26-JUN-10 17:15:00 (CST-6)
Location: HUMBOLDT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds caused tree damage, including at least one large tree uprooted.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:28:00 to 26-JUN-10 17:28:00 (CST-6)
Location: CROOKS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds caused tree damage, including a few branches blown down. The winds were accompanied by dime size hail.

Hail in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:28:00 to 26-JUN-10 17:28:00 (CST-6)
Location: CROOKS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime size hail was accompanied by damaging winds.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:31:00 to 26-JUN-10 17:31:00 (CST-6)
Location: NORTON ACRES
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down power poles.

Hail in TURNER, SOUTH DAKOTA
From 26-JUN-10 17:35:00 to 26-JUN-10 17:35:00 (CST-6)
Location: PARKER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 10:25:00 to 26-JUN-10 10:25:00 (CST-6)
Location: WESSINGTON
Magnitude: 1.00 
Property damage: 0.00K
Reported by: Public

Large hail covered the ground. Crop damage was suspected, but the amount of crop damage was not known.

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 11:09:00 to 26-JUN-10 11:09:00 (CST-6)
Location: HURON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 11:31:00 to 26-JUN-10 11:31:00 (CST-6)
Location: CAVOUR
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail size varied from marble to ping pong ball.

Hail in CLAY, SOUTH DAKOTA
From 26-JUN-10 18:52:00 to 26-JUN-10 18:52:00 (CST-6)
Location: DALESBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Large hail was accompanied by estimated 60 mph wind gusts.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 26-JUN-10 18:52:00 to 26-JUN-10 18:52:00 (CST-6)
Location: DALESBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

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

Flash Flood in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 19:45:00 to 26-JUN-10 21:00:00 (CST-6)
Location: BOOGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused flash flooding of rural roads, and small streams in the area.

Hail in MCCOOK, SOUTH DAKOTA
From 26-JUN-10 16:54:00 to 26-JUN-10 16:54:00 (CST-6)
Location: CANISTOTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large hail was accompanied by 25 mph winds.

Hail in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:22:00 to 26-JUN-10 17:22:00 (CST-6)
Location: HARTFORD
Magnitude: 1.50 
Reported by: Trained Spotter

Large hail accompanied by damaging winds caused an unknown amount of damage to vehicles, homes, and crops.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:22:00 to 26-JUN-10 17:22:00 (CST-6)
Location: HARTFORD
Magnitude: 56.00 EG
Reported by: Trained Spotter

Damaging winds, accompanied by large hail,  caused an unknown amount of damage to trees, homes, and crops.

Hail in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 19:20:00 to 26-JUN-10 19:20:00 (CST-6)
Location: NORWAY CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 18:25:00 to 26-JUN-10 18:29:00 (CST-6)
Location: HARRISBURG
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused significant shingle and other roof damage to homes, blew down power lines, and caused widespread tree damage, including several large trees blown down. Damage was caused to several homes by falling trees and tree debris. The winds also pushed a heavy parked camper off its supports.

Flash Flood in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 18:30:00 to 26-JUN-10 20:30:00 (CST-6)
Location: TEA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused flash flooding of streets and basements in and near the southern part of Sioux Falls. Several cars stalled attempting to move on flooded streets.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 18:30:00 to 26-JUN-10 18:30:00 (CST-6)
Location: CANTON MUNI ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

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

Flash Flood in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 18:36:00 to 26-JUN-10 20:30:00 (CST-6)
Location: SIOUX FALLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flash flooding of several streets and basements. Several cars stalled in high water at intersections.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 18:06:00 to 26-JUN-10 18:06:00 (CST-6)
Location: TEA
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds heavily damaged a house and garage, and caused heavy tree damage. The winds also blew down power poles and lines. Three house fires were reported; it was not known if the fires were started by downed power lines or by lightning.

Hail in CLAY, SOUTH DAKOTA
From 26-JUN-10 18:16:00 to 26-JUN-10 18:26:00 (CST-6)
Location: WAKONDA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 18:20:00 to 26-JUN-10 18:20:00 (CST-6)
Location: TEA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

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

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 18:20:00 to 26-JUN-10 18:20:00 (CST-6)
Location: NORTON ACRES
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds snapped a power pole at the intersection of Interstate 229 and Benson Road.

Hail in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:35:00 to 26-JUN-10 17:35:00 (CST-6)
Location: CROOKS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 11:31:00 to 26-JUN-10 11:31:00 (CST-6)
Location: CAVOUR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 11:53:00 to 26-JUN-10 11:53:00 (CST-6)
Location: IROQUOIS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TURNER, SOUTH DAKOTA
From 26-JUN-10 17:35:00 to 26-JUN-10 17:35:00 (CST-6)
Location: PARKER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in YANKTON, SOUTH DAKOTA
From 26-JUN-10 17:51:00 to 26-JUN-10 18:00:00 (CST-6)
Location: NAPA
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Newspaper

Hail ranging from pea to golf ball size caused scattered damage to vehicles. The amount of damage was not known.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 18:14:00 to 26-JUN-10 18:14:00 (CST-6)
Location: (FSD)JOE FOSS FLD SI
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 12:48:00 to 26-JUN-10 12:53:00 (CST-6)
Location: LAKE PRESTON
Magnitude: 2.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail varied from quarter to baseball size. The hail damaged several vehicles, but the amount of damage was not known.

Hail in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 13:10:00 to 26-JUN-10 13:10:00 (CST-6)
Location: ARLINGTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was mostly small with a few stones up to golf ball size.

Hail in BROOKINGS, SOUTH DAKOTA
From 26-JUN-10 13:59:00 to 26-JUN-10 13:59:00 (CST-6)
Location: BRUCE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 14:49:00 to 26-JUN-10 14:49:00 (CST-6)
Location: BADGER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LINCOLN, SOUTH DAKOTA
From 26-JUN-10 19:40:00 to 26-JUN-10 19:40:00 (CST-6)
Location: MOE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 16:39:00 to 26-JUN-10 16:39:00 (CST-6)
Location: CAVOUR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in SANBORN, SOUTH DAKOTA
From 26-JUN-10 16:40:00 to 26-JUN-10 16:40:00 (CST-6)
Location: FORESTBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

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

Hail in MINER, SOUTH DAKOTA
From 26-JUN-10 16:48:00 to 26-JUN-10 17:07:00 (CST-6)
Location: CARTHAGE
Magnitude: 1.75 
Property damage: 70.00K
Reported by: Trained Spotter

Hail to golf ball size caused heavy damage to vehicles, roofs, siding, and windows. The hail was accompanied by 40 mph winds. The hail caused local crop damage, but the amount of crop damage was not known.

Flash Flood in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 16:59:00 to 26-JUN-10 19:00:00 (CST-6)
Location: IROQUOIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain caused flash flooding of roads.

Tornado in MINER, SOUTH DAKOTA
From 26-JUN-10 17:02:00 to 26-JUN-10 17:04:00 (CST-6)
Location: CARTHAGE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief rain wrapped tornado caused no reported damage.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:15:00 to 26-JUN-10 17:15:00 (CST-6)
Location: HARTFORD
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 heavy rain.

Hail in KINGSBURY, SOUTH DAKOTA
From 26-JUN-10 12:05:00 to 26-JUN-10 12:40:00 (CST-6)
Location: DE SMET
Magnitude: 2.75 
Property damage: 300.00K
Reported by: Trained Spotter

Widespread large hail, with numerous stones to baseball size, fell along a narrow path several miles long which included the town of De Smet. The hail heavily damaged numerous vehicles, denting vehicle bodies and smashing or cracking windows, and also heavily damaged roofs on homes and other buildings. Damage to siding and to windows on buildings was limited because the hail was accompanied by light winds. The hail damaged lights at the Laura Ingalls Wilder Pageant site. One large hailstone punched a hole in the roof of a metal building. Crop damage was suspected in the area, but the amount of crop damage was not known.

Hail in BEADLE, SOUTH DAKOTA
From 26-JUN-10 11:14:00 to 26-JUN-10 11:14:00 (CST-6)
Location: (HON)HURON ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail at the state fairgrounds was mostly pea to marble size, but a few stones as large as golf balls fell.

Flash Flood in BROOKINGS, SOUTH DAKOTA
From 26-JUN-10 18:07:00 to 26-JUN-10 20:30:00 (CST-6)
Location: BROOKINGS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused widespread street flooding in the city of Brookings. Water on numerous roads was high enough to block the roads, with the water quite deep on several underpasses. Yards, several basements, fields, parks, and part of a golf course were also flooded. .

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 26-JUN-10 17:31:00 to 26-JUN-10 17:31:00 (CST-6)
Location: (FSD)JOE FOSS FLD SI
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds rolled over a motor home at the intersection of Interstates 29 and 90. Four people were trapped in the motor home, but no injuries were reported.