Lift associated with a jet streak across southern North Dakota interacted with an unstable and weakly capped environment with 30 to 40 knots of deep-layer shear to produce a couple of smaller clusters of thunderstorms with large hail and damaging wind during the evening and overnight which progressed east and southeast across southeast South Dakota.  The final cluster was a larger-scale bowing segment which produced damaging wind gusts across south central South Dakota.  Repeated storms with heavy rainfall resulted in spotty flash flooding.

Hail in BON HOMME, SOUTH DAKOTA
From 06-JUL-20 14:48:00 to 06-JUL-20 14:50:00 (CST-6)
Location: SCOTLAND
Magnitude: 1.25 
Crop damage: 4.00K
Reported by: Public

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 06-JUL-20 16:04:00 to 06-JUL-20 16:08:00 (CST-6)
Location: MISSION HILL
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 1.25M
Reported by: Trained Spotter

While dime size hail and winds to around 60 mph occurred in Mission Hill, it was part of a 3 mile wide swath of more significant wind-driven hail from around 4 miles north northwest of Mission Hill to a mile south of Mission Hill.  Corn and soybean fields were pulverized to stubble, with most trees stripped of leaves.  At a farm 3 miles northwest of Mission Hill, a grain bin, machine shed and trailer home each lost part of the roof. Along the path, three center irrigation pivots were overturned. Property damage costs are rough estimates. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 06-JUL-20 16:10:00 to 06-JUL-20 16:12:00 (CST-6)
Location: GAYVILLE
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 60.00K
Reported by: Mesonet

South Dakota RWIS station SD532 near Gayville measured a peak wind of 66 mph. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in BRULE, SOUTH DAKOTA
From 06-JUL-20 21:49:00 to 06-JUL-20 21:51:00 (CST-6)
Location: KIMBALL
Magnitude: 1.00 
Crop damage: 10.00K
Reported by: Public

Soybean leaves were ripped up with some wind and hail as large as quarters, but mostly up to nickel size. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in CLAY, SOUTH DAKOTA
From 06-JUL-20 16:34:00 to 06-JUL-20 16:36:00 (CST-6)
Location: MECKLING
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 32.00K
Reported by: Public

Strong winds accompanied the hail. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in DOUGLAS, SOUTH DAKOTA
From 06-JUL-20 21:47:00 to 06-JUL-20 21:49:00 (CST-6)
Location: ARMOUR
Magnitude: 1.00 
Reported by: Public

Hail in BRULE, SOUTH DAKOTA
From 06-JUL-20 21:45:00 to 06-JUL-20 21:47:00 (CST-6)
Location: KIMBALL
Magnitude: 0.88 
Reported by: Trained Spotter

Nickel sized hail piled up on the west side of buildings and stripped leaves from trees.

Flash Flood in DOUGLAS, SOUTH DAKOTA
From 06-JUL-20 23:55:00 to 07-JUL-20 02:00:00 (CST-6)
Location: CORSICA
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Roads were flooded over the curb in Armour, with water encroaching on several buildings. Numerous intersections along SD Highway 44 had standing water. Rainfall totaled 3.88 inches 3 miles south southwest of Corsica and 3.16 inches 5 miles west of Armour. Property damage costs are rough estimates.

Thunderstorm Wind in BRULE, SOUTH DAKOTA
From 06-JUL-20 23:58:00 to 06-JUL-20 23:59:00 (CST-6)
Location: (9V9)CHAMBERLAIN ARP
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Automated weather station K9V9 measured a peak wind of 61 mph.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 06-JUL-20 15:18:00 to 06-JUL-20 15:20:00 (CST-6)
Location: TYNDALL
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several 4 inch diameter limbs were downed by strong thunderstorm winds. Property damage costs are rough estimates.

Hail in HUTCHINSON, SOUTH DAKOTA
From 06-JUL-20 13:25:00 to 06-JUL-20 13:27:00 (CST-6)
Location: MILLTOWN
Magnitude: 1.00 
Reported by: Public

Flash Flood in HUTCHINSON, SOUTH DAKOTA
From 06-JUL-20 15:30:00 to 06-JUL-20 17:00:00 (CST-6)
Location: MILLTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 44 was temporarily blocked by law enforcement while multiple inches of water flowed over the roadway.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 06-JUL-20 15:40:00 to 06-JUL-20 15:43:00 (CST-6)
Location: NAPA
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A couple of large trees were toppled by strong wind gusts. Property damage costs are rough estimates.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 07-JUL-20 00:04:00 to 07-JUL-20 00:06:00 (CST-6)
Location: ACADEMY
Magnitude: 63.00 MG
Reported by: Mesonet

South Dakota RWIS station SD554 14 miles west of Platte near the Platte-Winner bridge measured a peak wind gust of 72 mph.

Thunderstorm Wind in GREGORY, SOUTH DAKOTA
From 07-JUL-20 00:40:00 to 07-JUL-20 00:42:00 (CST-6)
Location: FT RANDALL
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

South Dakota RWIS station SD588 near Fort Randall Dam measured a peak wind gust of 64 mph.

Hail in HANSON, SOUTH DAKOTA
From 06-JUL-20 12:43:00 to 06-JUL-20 12:46:00 (CST-6)
Location: FULTON
Magnitude: 1.50 
Crop damage: 2.00K
Reported by: Trained Spotter

Large hail preceded by some heavy rainfall and gusty wind. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 06-JUL-20 16:19:00 to 06-JUL-20 16:22:00 (CST-6)
Location: GAYVILLE
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A pine tree with a trunk diameter of six feet was downed due to strong thunderstorm wind gusts. Property damage costs are rough estimates.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 06-JUL-20 15:42:00 to 06-JUL-20 15:44:00 (CST-6)
Location: (YKN)CHAN GURNEY ARP
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Automated weather station KYKN measured a 68 mph wind gust.

Hail in HUTCHINSON, SOUTH DAKOTA
From 06-JUL-20 13:48:00 to 06-JUL-20 13:49:00 (CST-6)
Location: TSCHETTER COLONY
Magnitude: 1.00 
Crop damage: 23.00K
Reported by: Public

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in HANSON, SOUTH DAKOTA
From 06-JUL-20 13:00:00 to 06-JUL-20 13:02:00 (CST-6)
Location: ALEXANDRIA
Magnitude: 2.75 
Reported by: Law Enforcement

Hail in HANSON, SOUTH DAKOTA
From 06-JUL-20 13:00:00 to 06-JUL-20 13:02:00 (CST-6)
Location: ALEXANDRIA
Magnitude: 1.50 
Reported by: Law Enforcement

Ping-pong ball size hail fell at the Interstate 90 exit for Alexandria.

Hail in BON HOMME, SOUTH DAKOTA
From 06-JUL-20 13:05:00 to 06-JUL-20 13:07:00 (CST-6)
Location: BON HOMME COLONY
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 06-JUL-20 17:44:00 to 06-JUL-20 17:46:00 (CST-6)
Location: GRAHAM ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds to 60 mph were measured by a personal weather station.

Hail in DOUGLAS, SOUTH DAKOTA
From 06-JUL-20 21:23:00 to 06-JUL-20 21:25:00 (CST-6)
Location: CORSICA
Magnitude: 1.25 
Reported by: Law Enforcement

Hail in YANKTON, SOUTH DAKOTA
From 06-JUL-20 15:51:00 to 06-JUL-20 15:53:00 (CST-6)
Location: VALLEY VIEW
Magnitude: 0.88 
Crop damage: 250.00K
Reported by: Law Enforcement

Crops were stripped to the stem by wind driven sub-severe hail. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.