An approaching upper level jet within the presence of a sharp lower- to mid-level boundary focused widespread convective development during the overnight hours.  Elevated instability of 1000-1500 J/kg and deep layer shear in excess of 40 kts produced a very organized bowing system, which resulted in widespread 60 to 80 mph wind reports in southeast South Dakota, northeast Nebraska, and northwest Iowa.  At the peak, several thousand people were without power.

Thunderstorm Wind in TURNER, SOUTH DAKOTA
From 12-JUL-23 03:01:00 to 12-JUL-23 03:05:00 (CST-6)
Location: PARKER
Magnitude: 51.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 59 mph were measured by South Dakota Road Weather Information System site SD605 3 miles east-southeast of Parker.

Thunderstorm Wind in MCCOOK, SOUTH DAKOTA
From 12-JUL-23 02:50:00 to 12-JUL-23 02:53:00 (CST-6)
Location: MONTROSE
Magnitude: 63.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 72 mph were measured by South Dakota Road Weather Information System site SD547 3 miles southeast of Montrose.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 12-JUL-23 03:17:00 to 12-JUL-23 03:20:00 (CST-6)
Location: GAYVILLE
Magnitude: 56.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 65 mph were measured by South Dakota Road Weather Information System site SD532 2 miles west-southwest of Gayville.

Thunderstorm Wind in GREGORY, SOUTH DAKOTA
From 12-JUL-23 02:28:00 to 12-JUL-23 02:33:00 (CST-6)
Location: FT RANDALL
Magnitude: 63.00 MG
Reported by: Mesonet

Thunderstorm wind gusts as high as 72 mph were measured by South Dakota Road Weather Information System site SD588 1 mile southwest of Pickstown.

Thunderstorm Wind in CHARLES MIX, SOUTH DAKOTA
From 12-JUL-23 02:31:00 to 12-JUL-23 02:34:00 (CST-6)
Location: WAGNER
Magnitude: 54.00 MG
Reported by: Public

Multiple personal weather system sites around Wagner recorded peak wind gusts between 59 and 62 mph.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 12-JUL-23 03:26:00 to 12-JUL-23 03:29:00 (CST-6)
Location: DALESBURG
Magnitude: 55.00 MG
Reported by: Mesonet

Thunderstorm wind gusts as high as 63 mph were measured by South Dakota State University Mesonet site BFMS2 7 miles west-southwest of Beresford.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 12-JUL-23 02:58:00 to 12-JUL-23 03:01:00 (CST-6)
Location: TYNDALL
Magnitude: 50.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 58 mph were measured by South Dakota Road Weather Information System site SD571 5 miles east-southeast of Tyndall.

Thunderstorm Wind in HANSON, SOUTH DAKOTA
From 12-JUL-23 02:20:00 to 12-JUL-23 02:23:00 (CST-6)
Location: ALEXANDRIA
Magnitude: 50.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 58 mph were measured by South Dakota Road Weather Information System site SD502 4 miles east-northeast of Alexandria.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 12-JUL-23 02:49:00 to 12-JUL-23 02:51:00 (CST-6)
Location: TYNDALL
Magnitude: 61.00 EG
Reported by: Emergency Manager

Thunderstorm winds overturned an empty cattle truck.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 12-JUL-23 03:14:00 to 12-JUL-23 03:16:00 (CST-6)
Location: YANKTON
Magnitude: 61.00 EG
Reported by: Social Media

Thunderstorm winds downed a large tree.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 12-JUL-23 03:15:00 to 12-JUL-23 03:20:00 (CST-6)
Location: SIOUX FALLS
Magnitude: 61.00 EG
Reported by: Public

Large branches and a few large trees were downed across the city by thunderstorm wind gusts. Occasional stronger wind gusts lingered for around 5 minutes.

Hail in DAVISON, SOUTH DAKOTA
From 12-JUL-23 02:02:00 to 12-JUL-23 02:04:00 (CST-6)
Location: MITCHELL
Magnitude: 1.00 
Reported by: Public

Hail in MCCOOK, SOUTH DAKOTA
From 12-JUL-23 01:30:00 to 12-JUL-23 01:32:00 (CST-6)
Location: SALEM
Magnitude: 0.75 
Reported by: Public

Hail in YANKTON, SOUTH DAKOTA
From 12-JUL-23 02:43:00 to 12-JUL-23 02:45:00 (CST-6)
Location: TALMO
Magnitude: 1.50 
Reported by: Social Media

Thunderstorm Wind in GREGORY, SOUTH DAKOTA
From 12-JUL-23 02:01:00 to 12-JUL-23 02:03:00 (CST-6)
Location: HERRICK
Magnitude: 52.00 MG
Reported by: Public

Thunderstorm wind gusts were measured on a personal weather station 6 miles north-northeast of Herrick.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 12-JUL-23 03:12:00 to 12-JUL-23 03:15:00 (CST-6)
Location: ELLIS
Magnitude: 52.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station 5 miles west of Sioux Falls.

Thunderstorm Wind in BON HOMME, SOUTH DAKOTA
From 12-JUL-23 02:50:00 to 12-JUL-23 02:52:00 (CST-6)
Location: TYNDALL
Magnitude: 61.00 EG
Reported by: Emergency Manager

Numerous large tree limbs were downed by thunderstorm winds in Tyndall.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 12-JUL-23 03:13:00 to 12-JUL-23 03:13:00 (CST-6)
Location: (YKN)CHAN GURNEY ARP
Magnitude: 62.00 MG
Reported by: AWOS

Thunderstorm wind gusts as high as 71 mph were measured by Automated Weather Observing System site KYKN.

Thunderstorm Wind in AURORA, SOUTH DAKOTA
From 12-JUL-23 01:36:00 to 12-JUL-23 01:38:00 (CST-6)
Location: PLANKINTON
Magnitude: 52.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 60 mph were measured by South Dakota Road Weather Information System site SD533 4 miles west of Plankinton.

Thunderstorm Wind in CLAY, SOUTH DAKOTA
From 12-JUL-23 03:37:00 to 12-JUL-23 03:40:00 (CST-6)
Location: VERMILLION
Magnitude: 56.00 EG
Reported by: Social Media

Several large branches were blown down by thunderstorm winds around town.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 12-JUL-23 02:51:00 to 12-JUL-23 02:53:00 (CST-6)
Location: FREEMAN
Magnitude: 55.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 63 mph were measured by South Dakota Road Weather Information System site SD530 5 miles south of Freeman.

Thunderstorm Wind in DAVISON, SOUTH DAKOTA
From 12-JUL-23 01:48:00 to 12-JUL-23 01:50:00 (CST-6)
Location: LOOMIS
Magnitude: 58.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station 3 miles southeast of Loomis.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 12-JUL-23 02:24:00 to 12-JUL-23 02:27:00 (CST-6)
Location: PARKSTON
Magnitude: 74.00 EG
Reported by: Social Media

Thunderstorm wind gusts snapped off a tree one foot above the ground.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 12-JUL-23 02:41:00 to 12-JUL-23 02:44:00 (CST-6)
Location: MENNO
Magnitude: 60.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station in Menno.

Thunderstorm Wind in YANKTON, SOUTH DAKOTA
From 12-JUL-23 03:05:00 to 12-JUL-23 03:08:00 (CST-6)
Location: MAYFIELD
Magnitude: 50.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station 2 miles east of Mayfield.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 12-JUL-23 03:30:00 to 12-JUL-23 03:32:00 (CST-6)
Location: ALSEN
Magnitude: 70.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 80 mph were measured by South Dakota Road Weather Information System site SD508 3 miles south-southwest of Beresford.

Thunderstorm Wind in HUTCHINSON, SOUTH DAKOTA
From 12-JUL-23 02:36:00 to 12-JUL-23 02:39:00 (CST-6)
Location: TRIPP
Magnitude: 60.00 MG
Reported by: Department of Highways

Thunderstorm wind gusts as high as 69 mph were measured by South Dakota Road Weather Information System site SD570 1 mile northwest of Tripp.

Thunderstorm Wind in MINNEHAHA, SOUTH DAKOTA
From 12-JUL-23 03:13:00 to 12-JUL-23 03:13:00 (CST-6)
Location: WEST SIOUX FALLS
Magnitude: 63.00 MG
Reported by: ASOS

Thunderstorm wind gusts as high as 72 mph were measured by Automated Surface Observing System site KFSD.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 12-JUL-23 03:39:00 to 12-JUL-23 03:42:00 (CST-6)
Location: JUNCTION CITY
Magnitude: 56.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station 6 miles east of Vermillion.

Thunderstorm Wind in UNION, SOUTH DAKOTA
From 12-JUL-23 04:14:00 to 12-JUL-23 04:15:00 (CST-6)
Location: MC COOK LAKE
Magnitude: 51.00 MG
Reported by: Public

Thunderstorm winds were measured on a personal weather station 3 miles west-southwest of North Sioux City.

Hail in CLAY, SOUTH DAKOTA
From 12-JUL-23 02:55:00 to 12-JUL-23 02:57:00 (CST-6)
Location: WAKONDA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media