A large upper level low pressure trough lifting northeast over the region along with a surface cold front interacting with a warm and very humid air mass brought severe thunderstorms to the region. During the mid afternoon hours, storms rapidly developed over central and eastern South Dakota, between Pierre and Aberdeen. These storms quickly strengthened and produced large hail, damaging winds, and eventually tornadoes.  The storms evolved into mainly a wind and tornado event around 7 pm CDT. Widespread wind damage occurred across northeast South Dakota as the storms formed a line and moved northeast. Many tornadoes occurred across the region, causing EF-0 and EF-1 damage.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:29:00 to 13-JUN-17 18:29:00 (CST-6)
Location: HOLMQUIST
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Ninety mph winds or higher downed numerous trees with a storage shed completely destroyed.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:31:00 to 13-JUN-17 18:31:00 (CST-6)
Location: HOLMQUIST
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Several power poles were downed by an estimated ninety mph winds.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:32:00 to 13-JUN-17 18:32:00 (CST-6)
Location: WEBSTER
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

An estimated seventy-five mph wind downed several power lines in Webster.

Funnel Cloud in DAY, SOUTH DAKOTA
From 13-JUN-17 17:39:00 to 13-JUN-17 17:39:00 (CST-6)
Location: PIERPONT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:34:00 to 13-JUN-17 18:34:00 (CST-6)
Location: WEBSTER
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Three power poles were downed by estimated eighty mph winds.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:35:00 to 13-JUN-17 18:35:00 (CST-6)
Location: WAUBAY
Magnitude: 74.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

A dairy barn was partially destroyed by estimated eighty-five mph winds.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:37:00 to 13-JUN-17 18:37:00 (CST-6)
Location: WAUBAY
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Eighty mph winds caused a lot of damage throughout Waubay with trees uprooted and damage to several structures. There were also many power outages.

Funnel Cloud in CODINGTON, SOUTH DAKOTA
From 13-JUN-17 18:25:00 to 13-JUN-17 18:25:00 (CST-6)
Location: FLORENCE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in FAULK, SOUTH DAKOTA
From 13-JUN-17 15:30:00 to 13-JUN-17 15:30:00 (CST-6)
Location: ROCKHAM
Magnitude: 1.50 
Reported by: Emergency Manager

Hail in HAND, SOUTH DAKOTA
From 13-JUN-17 14:50:00 to 13-JUN-17 14:50:00 (CST-6)
Location: POLO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in HUGHES, SOUTH DAKOTA
From 13-JUN-17 15:40:00 to 13-JUN-17 15:40:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GRANT, SOUTH DAKOTA
From 13-JUN-17 19:05:00 to 13-JUN-17 19:05:00 (CST-6)
Location: MILBANK
Magnitude: 74.00 EG
Crop damage: 0.00K
Reported by: Public

A large section of the roof on a dairy barn was blown off by estimated eighty to ninety mph winds.

Thunderstorm Wind in GRANT, SOUTH DAKOTA
From 13-JUN-17 19:10:00 to 13-JUN-17 19:10:00 (CST-6)
Location: MILBANK
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple trees were downed by estimated seventy to eighty mph winds along with many electrical lines downed.  A few fires were started by the electrical lines.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:20:00 (CST-6)
Location: ROSHOLT
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

An estimated ninety mph wind or higher destroyed two cabins. One was destroyed by the wind with the other one destroyed when a large tree fell onto it.

Hail in HAND, SOUTH DAKOTA
From 13-JUN-17 15:45:00 to 13-JUN-17 15:45:00 (CST-6)
Location: POLO
Magnitude: 2.00 
Reported by: Emergency Manager

Hail in HUGHES, SOUTH DAKOTA
From 13-JUN-17 15:45:00 to 13-JUN-17 15:45:00 (CST-6)
Location: BLUNT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HUGHES, SOUTH DAKOTA
From 13-JUN-17 16:08:00 to 13-JUN-17 16:08:00 (CST-6)
Location: HARROLD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in POTTER, SOUTH DAKOTA
From 13-JUN-17 16:08:00 to 13-JUN-17 16:08:00 (CST-6)
Location: LEBANON
Magnitude: 1.75 
Reported by: Public

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:20:00 (CST-6)
Location: NEW EFFINGTON
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees were uprooted along with many large branches downed by estimated eighty mph winds.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:20:00 (CST-6)
Location: NEW EFFINGTON
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tree was uprooted by estimated seventy-five mph winds.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:25:00 to 13-JUN-17 19:25:00 (CST-6)
Location: NEW EFFINGTON
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Large branches were downed by estimated sixty to seventy mph winds.

Hail in BUFFALO, SOUTH DAKOTA
From 13-JUN-17 16:14:00 to 13-JUN-17 16:14:00 (CST-6)
Location: FT THOMPSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 13-JUN-17 17:00:00 to 13-JUN-17 17:00:00 (CST-6)
Location: BATH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 13-JUN-17 16:31:00 to 13-JUN-17 16:31:00 (CST-6)
Location: BOWDLE
Magnitude: 1.00 
Reported by: Public

Hail in FAULK, SOUTH DAKOTA
From 13-JUN-17 17:06:00 to 13-JUN-17 17:06:00 (CST-6)
Location: FAULKTON MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:25:00 to 13-JUN-17 19:25:00 (CST-6)
Location: VICTOR
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Ninety mph winds or higher took the roof off of a barn.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:28:00 to 13-JUN-17 19:28:00 (CST-6)
Location: VICTOR
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several trees were snapped by estimated eighty mph winds.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:30:00 to 13-JUN-17 19:30:00 (CST-6)
Location: VICTOR
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Ninety mph winds or higher uprooted several trees along with denting several grain bins.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:30:00 to 13-JUN-17 19:30:00 (CST-6)
Location: VICTOR
Magnitude: 78.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees were uprooted by estimated ninety mph winds.

Tornado in HAND, SOUTH DAKOTA
From 13-JUN-17 15:32:00 to 13-JUN-17 15:33:00 (CST-6)
Location: POLO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Another brief tornado touched down southwest of Zell with no damage reported. Scattered debris was noted by the storm survey.

Tornado in BROWN, SOUTH DAKOTA
From 13-JUN-17 17:05:00 to 13-JUN-17 17:06:00 (CST-6)
Location: GROTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tornado touched down briefly south of Groton. No damage occurred.

Tornado in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:23:00 (CST-6)
Location: NEW EFFINGTON
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down southwest of New Effington causing extensive tree damage with many trees snapped at their trunks or uprooted.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 13-JUN-17 16:20:00 to 13-JUN-17 16:20:00 (CST-6)
Location: BRENTFORD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Sixty mph winds downed some large tree limbs.

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 13-JUN-17 16:30:00 to 13-JUN-17 16:30:00 (CST-6)
Location: MELLETTE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 13-JUN-17 17:58:00 to 13-JUN-17 17:58:00 (CST-6)
Location: CLARK
Magnitude: 80.00 MG
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 13-JUN-17 18:05:00 to 13-JUN-17 18:05:00 (CST-6)
Location: ELROD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty-five mph winds were estimated.

Thunderstorm Wind in CODINGTON, SOUTH DAKOTA
From 13-JUN-17 18:25:00 to 13-JUN-17 18:25:00 (CST-6)
Location: FLORENCE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated.

Tornado in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:25:00 to 13-JUN-17 19:26:00 (CST-6)
Location: NEW EFFINGTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down and damaged a tree grove. Multiple trees were uprooted or snapped at the trunk. Large branches were downed and tossed multiple directions.

Tornado in DAY, SOUTH DAKOTA
From 13-JUN-17 18:29:00 to 13-JUN-17 18:30:00 (CST-6)
Location: HOLMQUIST
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly occurred to the southeast of Holmquist. The tornado destroyed a farm shed, throwing much of the debris about 150 yards to the north. The tornado tracked north through a shelter belt, snapping and uprooting numerous trees before dissipating shortly after entering a farm field.

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 13-JUN-17 16:12:00 to 13-JUN-17 16:12:00 (CST-6)
Location: ONIDA
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: COOP Observer

An estimated seventy-five mph wind uprooted two trees.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:31:00 to 13-JUN-17 18:31:00 (CST-6)
Location: HOLMQUIST
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:33:00 to 13-JUN-17 18:33:00 (CST-6)
Location: WEBSTER MUNI ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty-five mph winds were estimated.

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:35:00 to 13-JUN-17 18:35:00 (CST-6)
Location: WEBSTER MUNI ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 13-JUN-17 18:50:00 to 13-JUN-17 18:50:00 (CST-6)
Location: WAUBAY
Magnitude: 75.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 13-JUN-17 16:25:00 to 13-JUN-17 16:25:00 (CST-6)
Location: BRENTFORD
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A power pole was snapped by estimated seventy mph winds.

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 13-JUN-17 17:58:00 to 13-JUN-17 17:58:00 (CST-6)
Location: CLARK
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Eighty mph winds removed a shed roof along with downing several trees.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 13-JUN-17 18:03:00 to 13-JUN-17 18:03:00 (CST-6)
Location: ABERDEEN
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: NWS Employee

Several trees were downed by estimated seventy mph winds.

Thunderstorm Wind in MARSHALL, SOUTH DAKOTA
From 13-JUN-17 19:05:00 to 13-JUN-17 19:05:00 (CST-6)
Location: HILLHEAD
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:14:00 to 13-JUN-17 19:14:00 (CST-6)
Location: CLAIRE CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Sixty mph winds were estimated.

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:20:00 (CST-6)
Location: CORONA
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in ROBERTS, SOUTH DAKOTA
From 13-JUN-17 19:20:00 to 13-JUN-17 19:20:00 (CST-6)
Location: NEW EFFINGTON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Seventy mph winds were estimated.

Tornado in HAND, SOUTH DAKOTA
From 13-JUN-17 15:25:00 to 13-JUN-17 15:28:00 (CST-6)
Location: POLO
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A tornado touched down southwest of Zell and snapped and uprooted trees around a farm. Several of the those trees fell onto a house that had two occupants. A roof was torn off of a barn and a machine shed was partially destroyed with debris thrown across a neighboring field.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 13-JUN-17 18:05:00 to 13-JUN-17 18:05:00 (CST-6)
Location: ABERDEEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Some large branches were downed by sixty mph winds.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 13-JUN-17 18:15:00 to 13-JUN-17 18:15:00 (CST-6)
Location: PLANA
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed onto a power line by sixty-five mph winds.

Thunderstorm Wind in CODINGTON, SOUTH DAKOTA
From 13-JUN-17 18:18:00 to 13-JUN-17 18:18:00 (CST-6)
Location: WALLACE
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Seventy-five mph winds downed several large trees.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 13-JUN-17 18:27:00 to 13-JUN-17 18:27:00 (CST-6)
Location: CLAREMONT
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: NWS Employee

Sixty mph winds downed a large tree limb.

Tornado in MARSHALL, SOUTH DAKOTA
From 13-JUN-17 18:55:00 to 13-JUN-17 18:56:00 (CST-6)
Location: EDEN
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado touched down and caused the collapse of the entire roof of a barn. Debris was lofted 500 feet to the northeast. Minor roof damage also occurred to a second outbuilding along with minor tree damage and damage to the siding of a house.

Tornado in HAND, SOUTH DAKOTA
From 13-JUN-17 15:16:00 to 13-JUN-17 15:17:00 (CST-6)
Location: POLO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down briefly in an open field. No damage was reported.

Hail in HYDE, SOUTH DAKOTA
From 13-JUN-17 16:23:00 to 13-JUN-17 16:23:00 (CST-6)
Location: HOLABIRD
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail broke the windshield on a pickup.