A front stretching from west to east across the region moved back and forth as several surface low pressure areas moved along it from July 16th through the 20th. Several periods of severe weather occurred across central and northeast South Dakota during the evening, overnight, and morning hours causing mainly tree damage.
During the the morning hours of July 19th, storms developed over north central South Dakota and tracked east across northeast South Dakota. The storms produced winds from 60 to 90 mph with reports of trees damaged or toppled, roof damage, along with structural damage in the storms path. North of Gettysburg, two grain bins were blown off their bases with two other bins receiving extensive damage. In Aberdeen, a localized area of intense winds occurred on the southwest side of town, where a store marquee sign was torn down and pieces tossed a block away, framing for new construction was flattened, and significant shingle damage occurred.  Eye witnesses noted some rotation as debris was lofted into the air which may have been from locally enhanced rotating winds from a gustnado.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 20-JUL-19 04:25:00 to 20-JUL-19 04:25:00 (CST-6)
Location: MILLER
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

An estimated seventy mph wind downed several large tree branches in Miller along with some trees at the golf course.

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 17-JUL-19 00:09:00 to 17-JUL-19 00:09:00 (CST-6)
Location: GANN VLY
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 17-JUL-19 22:01:00 to 17-JUL-19 22:01:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in WALWORTH, SOUTH DAKOTA
From 17-JUL-19 22:23:00 to 17-JUL-19 22:23:00 (CST-6)
Location: AKASKA
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 18:44:00 to 16-JUL-19 18:44:00 (MST-7)
Location: MC INTOSH MUNI ARPT
Magnitude: 1.75 
Reported by: Public

Hail in CAMPBELL, SOUTH DAKOTA
From 16-JUL-19 18:20:00 to 16-JUL-19 18:20:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 18:20:00 to 16-JUL-19 18:20:00 (CST-6)
Location: HOSMER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WALWORTH, SOUTH DAKOTA
From 16-JUL-19 22:00:00 to 16-JUL-19 22:00:00 (CST-6)
Location: GLENHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DEWEY, SOUTH DAKOTA
From 20-JUL-19 01:05:00 to 20-JUL-19 01:05:00 (MST-7)
Location: LA PLANT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 20-JUL-19 02:19:00 to 20-JUL-19 02:19:00 (CST-6)
Location: GORMAN
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 20-JUL-19 02:44:00 to 20-JUL-19 02:44:00 (CST-6)
Location: AGAR
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 20-JUL-19 05:09:00 to 20-JUL-19 05:09:00 (CST-6)
Location: RELIANCE ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 19:44:00 to 16-JUL-19 19:44:00 (MST-7)
Location: LITTLE EAGLE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in WALWORTH, SOUTH DAKOTA
From 16-JUL-19 21:27:00 to 16-JUL-19 21:27:00 (CST-6)
Location: MOBRIDGE
Magnitude: 1.50 
Reported by: Emergency Manager

Hail in WALWORTH, SOUTH DAKOTA
From 20-JUL-19 02:10:00 to 20-JUL-19 02:10:00 (CST-6)
Location: LOWRY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POTTER, SOUTH DAKOTA
From 20-JUL-19 03:11:00 to 20-JUL-19 03:11:00 (CST-6)
Location: LEBANON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 19-JUL-19 05:52:00 to 19-JUL-19 05:52:00 (CST-6)
Location: GETTYSBURG
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: Public

Two grain bins were blown off their bases with two other bins receiving extensive damage.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 17-JUL-19 00:10:00 to 17-JUL-19 00:10:00 (CST-6)
Location: DANFORTH
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in WALWORTH, SOUTH DAKOTA
From 17-JUL-19 01:00:00 to 17-JUL-19 01:00:00 (CST-6)
Location: LOWRY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 20-JUL-19 05:29:00 to 20-JUL-19 05:29:00 (CST-6)
Location: GANN VLY
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 19-JUL-19 07:44:00 to 19-JUL-19 07:44:00 (CST-6)
Location: ABERDEEN
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

In Aberdeen, a store marquee sign was torn down and pieces tossed a block away, framing for new construction was flattened, and significant shingle damage occurred near the intersection of 6th Avenue and South 2nd St. Several trees were also downed in town. Winds were estimated at 80 to 90 mph.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 20-JUL-19 00:10:00 to 20-JUL-19 00:10:00 (MST-7)
Location: FIRESTEEL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A few tree limbs were downed by estimated sixty mph winds.

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 20-JUL-19 03:09:00 to 20-JUL-19 03:09:00 (CST-6)
Location: FIELDER
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Broadcast Media

Estimated seventy-five mph winds tipped over a camper.

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 20-JUL-19 03:26:00 to 20-JUL-19 03:26:00 (CST-6)
Location: HOLABIRD
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A large cottonwood tree was knocked down by an estimated eighty mph wind.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 19-JUL-19 03:22:00 to 19-JUL-19 03:22:00 (MST-7)
Location: BEAR CREEK
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 19-JUL-19 03:38:00 to 19-JUL-19 03:38:00 (MST-7)
Location: EAGLE BUTTE
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 19-JUL-19 04:04:00 to 19-JUL-19 04:04:00 (MST-7)
Location: RIDGEVIEW JEWETT ARP
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 19-JUL-19 05:42:00 to 19-JUL-19 05:42:00 (CST-6)
Location: GETTYSBURG
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in DAY, SOUTH DAKOTA
From 19-JUL-19 08:26:00 to 19-JUL-19 08:26:00 (CST-6)
Location: PIERPONT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Some tree branches were downed.

Thunderstorm Wind in HAMLIN, SOUTH DAKOTA
From 20-JUL-19 05:45:00 to 20-JUL-19 05:45:00 (CST-6)
Location: BRYANT
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A large, sturdy ash tree with estimated one foot diameter trunk was knocked over.

Thunderstorm Wind in MARSHALL, SOUTH DAKOTA
From 19-JUL-19 08:31:00 to 19-JUL-19 08:31:00 (CST-6)
Location: SPAIN
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated sixty mph winds downed several branches.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 20-JUL-19 00:48:00 to 20-JUL-19 00:48:00 (MST-7)
Location: RIDGEVIEW JEWETT ARP
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 20-JUL-19 03:26:00 to 20-JUL-19 03:26:00 (CST-6)
Location: HOLABIRD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 16:16:00 to 16-JUL-19 16:16:00 (MST-7)
Location: MAHTO
Magnitude: 1.75 
Reported by: Public

Hail in CAMPBELL, SOUTH DAKOTA
From 16-JUL-19 17:24:00 to 16-JUL-19 17:24:00 (CST-6)
Location: ARTAS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 20-JUL-19 03:28:00 to 20-JUL-19 03:28:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 20-JUL-19 03:35:00 to 20-JUL-19 03:35:00 (CST-6)
Location: HARROLD ARPT
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CLARK, SOUTH DAKOTA
From 20-JUL-19 05:40:00 to 20-JUL-19 05:40:00 (CST-6)
Location: ELROD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds were estimated.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 19-JUL-19 07:47:00 to 19-JUL-19 07:47:00 (CST-6)
Location: (ABR)ABERDEEN RGNL A
Magnitude: 68.00 MG
Crop damage: 0.00K
Reported by: ASOS

The automated weather station at the Aberdeen Airport recorded 79 mph winds. Tree damage occurred throughout town. Corn crop damage was also noted on the east edge of town.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 19-JUL-19 07:11:00 to 19-JUL-19 07:11:00 (CST-6)
Location: CRAVEN
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: CoCoRaHS

A tree was downed by estimated seventy mph winds.

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 20-JUL-19 04:17:00 to 20-JUL-19 04:17:00 (CST-6)
Location: PRESHO MUNI ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 20-JUL-19 04:28:00 to 20-JUL-19 04:28:00 (CST-6)
Location: VAYLAND
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 20-JUL-19 03:57:00 to 20-JUL-19 03:57:00 (CST-6)
Location: BLUNT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in STANLEY, SOUTH DAKOTA
From 20-JUL-19 03:11:00 to 20-JUL-19 03:11:00 (MST-7)
Location: HAYES
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 20-JUL-19 04:44:00 to 20-JUL-19 04:44:00 (CST-6)
Location: GANN VLY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 20-JUL-19 04:45:00 to 20-JUL-19 04:45:00 (CST-6)
Location: DANFORTH
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 15:42:00 to 16-JUL-19 15:42:00 (MST-7)
Location: MC LAUGHLIN
Magnitude: 1.75 
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 16:35:00 to 16-JUL-19 16:35:00 (MST-7)
Location: WAKPALA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCPHERSON, SOUTH DAKOTA
From 16-JUL-19 17:55:00 to 16-JUL-19 17:55:00 (CST-6)
Location: HILLSVIEW
Magnitude: 1.75 
Reported by: Emergency Manager

Thunderstorm Wind in JONES, SOUTH DAKOTA
From 16-JUL-19 21:50:00 to 16-JUL-19 21:50:00 (CST-6)
Location: OKATON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sixty mph winds were estimated.

Thunderstorm Wind in WALWORTH, SOUTH DAKOTA
From 16-JUL-19 22:30:00 to 16-JUL-19 22:30:00 (CST-6)
Location: AKASKA
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated sixty mph winds brought down several large tree branches.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 19-JUL-19 02:08:00 to 19-JUL-19 02:08:00 (MST-7)
Location: THUNDER HAWK
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated sixty-five mph winds downed many branches.

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 19-JUL-19 06:05:00 to 19-JUL-19 06:05:00 (CST-6)
Location: TOLSTOY
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 18:00:00 to 16-JUL-19 18:00:00 (CST-6)
Location: HOSMER
Magnitude: 1.50 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 18:08:00 to 16-JUL-19 18:08:00 (CST-6)
Location: HOSMER
Magnitude: 2.00 
Reported by: Public

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 18:58:00 to 16-JUL-19 18:58:00 (CST-6)
Location: BEEBE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 19:29:00 to 16-JUL-19 19:29:00 (CST-6)
Location: IPSWICH
Magnitude: 1.75 
Reported by: Fire Department/Rescue

Hail in EDMUNDS, SOUTH DAKOTA
From 16-JUL-19 19:49:00 to 16-JUL-19 19:49:00 (CST-6)
Location: LOYALTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CORSON, SOUTH DAKOTA
From 16-JUL-19 19:31:00 to 16-JUL-19 19:31:00 (MST-7)
Location: MC LAUGHLIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 17-JUL-19 23:54:00 to 17-JUL-19 23:54:00 (CST-6)
Location: ABERDEEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A few large branches were downed in Aberdeen.

Thunderstorm Wind in BROWN, SOUTH DAKOTA
From 18-JUL-19 00:10:00 to 18-JUL-19 00:10:00 (CST-6)
Location: BATH
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Public

Seventy mph winds split a tree in half at the trunk along with downing many large tree branches and damaging shingles on the roof.

Thunderstorm Wind in EDMUNDS, SOUTH DAKOTA
From 19-JUL-19 06:08:00 to 19-JUL-19 06:08:00 (CST-6)
Location: BOWDLE
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: NWS Employee

A small outbuilding was blown down.

Thunderstorm Wind in FAULK, SOUTH DAKOTA
From 19-JUL-19 06:13:00 to 19-JUL-19 06:13:00 (CST-6)
Location: ONAKA
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Public

Estimated seventy mph winds tore many shingles off the roof.