A complex of thunderstorms developed during the evening across western South Dakota, moving east and becoming more organized as the low-level jet increased focus into south central and southeast South Dakota late at night.  Deep-layer effective shear reached 35 to 45 knots with MUCAPE to 2000J/kg. 0-3km shear was 25 to 35 knots, largely normal to the orientation of the convective line.  A large-scale bowing segment evolved quickly with a long track of damaging wind across southeast South Dakota into northwest Iowa.  Several mesovortices developed along the line and produced swaths of enhanced wind damage, many with winds from 80 to 90 mph, and as high as 115 mph.  Three people were injured as the strong winds went through a campground, tearing up trees and tents, and rolling campers.
A rare, but short-lived, late night tornado was spawned near one of the stronger mesovortices.
Areas of high rainfall rates resulted in spotty urban flash flooding.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:53:00 to 17-JUL-19 05:00:00 (CST-6)
Location: MENNO ARPT
Magnitude: 70.00 MG
Reported by: Public

Lightning in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 05:00:00 to 17-JUL-19 05:00:00 (CST-6)
Location: FREEMAN
Property damage: 90.00K
Reported by: Emergency Manager

A lightning strike to a single-family home caused a fire, resulting in total loss of the home.
Four residents were home at the time of the lightning strike, but there were no injuries.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 17-JUL-19 03:39:00 to 17-JUL-19 03:46:00 (CST-6)
Location: GEDDES
Magnitude: 55.00 MG
Reported by: RAWS

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 17-JUL-19 03:58:00 to 17-JUL-19 04:05:00 (CST-6)
Location: CORSICA
Magnitude: 70.00 EG
Property damage: 10.00K
Reported by: Emergency Manager

A farm outbuilding was destroyed by strong thunderstorm winds.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 17-JUL-19 05:17:00 to 17-JUL-19 05:25:00 (CST-6)
Location: WAKONDA
Magnitude: 74.00 EG
Reported by: Fire Department/Rescue

Farm outbuilding destroyed northwest of Wakonda.

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 17-JUL-19 04:00:00 to 17-JUL-19 04:05:00 (CST-6)
Location: ARMOUR
Magnitude: 61.00 EG
Reported by: Emergency Manager

Widespread tree damage throughout Armour.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:10:00 to 17-JUL-19 04:20:00 (CST-6)
Location: BEARDSLEY
Magnitude: 81.00 EG
Property damage: 100.00K
Reported by: Emergency Manager

Two large silos suffered considerable damage with roofs collapsed.

Tornado in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:22:00 to 17-JUL-19 04:27:00 (CST-6)
Location: TRIPP
Tornado F-scale: EF1
Property damage: 100.00K
Reported by: NWS Storm Survey

A tornado spun up around two miles north of Tripp, touching down just east of a railroad line east of State Highway 37 and north of 285th Street. The tornado tracked to the southeast, where it impacted a farmstead, causing significant damage to two barns and destroying a small outbuilding. The tornado continued across 411th Ave. where it removed the second story of a poorly constructed residence.  Fortunately, the residents were not home at the time.  After a mile on the ground, a third farmstead was struck tearing metal roofing from a barn.  At this point, the tornado veered a bit more southward, finally lifting just after crossing U.S. Highway 18 near 412th Avenue.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:22:00 to 17-JUL-19 04:30:00 (CST-6)
Location: TRIPP
Magnitude: 64.00 EG
Property damage: 50.00K
Reported by: Emergency Manager

Lumber yard lost part of its roof, with most fences taken out.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:33:00 to 17-JUL-19 04:38:00 (CST-6)
Location: PARKSTON ARPT
Magnitude: 77.00 MG
Reported by: Mesonet

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 17-JUL-19 04:06:00 to 17-JUL-19 04:15:00 (CST-6)
Location: PICKSTOWN
Magnitude: 61.00 EG
Reported by: Trained Spotter

Large picnic table blown over and moved a considerable distance.

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 17-JUL-19 04:08:00 to 17-JUL-19 04:15:00 (CST-6)
Location: ARMOUR
Magnitude: 56.00 EG
Reported by: Emergency Manager

Significant tree damage.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 17-JUL-19 03:12:00 to 17-JUL-19 03:20:00 (CST-6)
Location: ACADEMY
Magnitude: 70.00 EG
Property damage: 50.00K
Reported by: Emergency Manager

Significant tree damage occurred at the Snake Creek Campground. Injuries occurred when tree branches fell on tents.  Several campers rolled by high winds.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 17-JUL-19 03:13:00 to 17-JUL-19 03:20:00 (CST-6)
Location: ACADEMY
Magnitude: 100.00 MG
Reported by: Mesonet

DOT RWIS measured 115 mph wind gust.

Thunderstorm Wind in BRULE, SOUTH DAKOTA
From 17-JUL-19 03:16:00 to 17-JUL-19 03:20:00 (CST-6)
Location: KIMBALL
Magnitude: 55.00 MG
Reported by: Department of Highways

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 17-JUL-19 03:25:00 to 17-JUL-19 03:30:00 (CST-6)
Location: BOVEE
Magnitude: 57.00 MG
Reported by: Public

Thunderstorm Wind in AURORA, SOUTH DAKOTA
From 17-JUL-19 03:37:00 to 17-JUL-19 03:45:00 (CST-6)
Location: WHITE LAKE
Magnitude: 56.00 MG
Reported by: COOP Observer

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 17-JUL-19 04:35:00 to 17-JUL-19 04:45:00 (CST-6)
Location: TYNDALL
Magnitude: 56.00 EG
Reported by: COOP Observer

Numerous branches and limbs broken from trees.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:35:00 to 17-JUL-19 04:45:00 (CST-6)
Location: PARKSTON
Magnitude: 70.00 EG
Reported by: Emergency Manager

Several large trees down in town.

Thunderstorm Wind in DOUGLAS, SOUTH DAKOTA
From 17-JUL-19 04:10:00 to 17-JUL-19 04:20:00 (CST-6)
Location: DELMONT
Magnitude: 65.00 EG
Reported by: Newspaper

Significant tree damage and some damage to buildings in town.  Power was knocked out to most of the town through the morning hours.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 17-JUL-19 04:41:00 to 17-JUL-19 04:55:00 (CST-6)
Location: OLIVET
Magnitude: 65.00 EG
Reported by: Broadcast Media

Significant tree damage throughout the town of Olivet.  A gas line was damaged by falling limbs which required evacuation of residents over a two block area for several hours during the morning.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 17-JUL-19 05:47:00 to 17-JUL-19 05:52:00 (CST-6)
Location: LENNOX
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: Utility Company

A tree fell on a power line in Lennox, cutting off service to more than 660 customers for several hours.

Thunderstorm Wind in LINCOLN, SOUTH DAKOTA
From 17-JUL-19 06:01:00 to 17-JUL-19 06:10:00 (CST-6)
Location: HUDSON
Magnitude: 56.00 EG
Reported by: Broadcast Media

Numerous large tree limbs snapped.

Flash Flood in MINNEHAHA, SOUTH DAKOTA
From 17-JUL-19 06:20:00 to 17-JUL-19 08:00:00 (CST-6)
Location: NORTON ACRES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Up to 2 feet of water pooling in street. 17 vehicles were reported stranded in high water.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 17-JUL-19 05:22:00 to 17-JUL-19 05:27:00 (CST-6)
Location: WAKONDA
Magnitude: 65.00 EG
Reported by: Fire Department/Rescue

Wind damage at farmstead to buildings and trees.

Thunderstorm Wind in TURNER, SOUTH DAKOTA
From 17-JUL-19 05:30:00 to 17-JUL-19 05:38:00 (CST-6)
Location: CENTERVILLE
Magnitude: 61.00 EG
Reported by: Broadcast Media

Large tree snapped.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 17-JUL-19 05:40:00 to 17-JUL-19 05:45:00 (CST-6)
Location: ALSEN
Magnitude: 65.00 EG
Reported by: Social Media

Large tree limb broken off and tossed on top of car.