Surface low pressure stalled across far eastern Minnesota and western Wisconsin for much of November 11 into November 12.  A strong synoptic pressure gradient intensified over eastern South Dakota, with several locations experiencing numerous wind gusts over 58 mph, and many sustained northwest winds around 40 mph.

High Wind in AURORA, SOUTH DAKOTA
From 11-NOV-21 12:00:00 to 11-NOV-21 14:00:00 (CST-6)
Magnitude: 50.00 MG
Reported by: Department of Highways

During several hours which featured sustained winds of 30 to 38 mph with wind gusts of 50 to 55 mph, a wind gust of 58 mph was measured by the South Dakota Road Weather Information System site near Plankinton (SD553).

High Wind in DOUGLAS, SOUTH DAKOTA
From 11-NOV-21 14:00:00 to 12-NOV-21 06:00:00 (CST-6)
Magnitude: 50.00 MG
Reported by: RAWS

Sustained winds periodically reached 30 to 40 mph, with the RAWS site near Geddes (RLAS2) measuring a peak wind gust of 58 mph and the South Dakota Road Weather Information System site at Tripp (SD570) measuring a peak wind gust of 56 mph.

High Wind in BRULE, SOUTH DAKOTA
From 11-NOV-21 21:00:00 to 12-NOV-21 01:00:00 (CST-6)
Magnitude: 54.00 MG
Reported by: Department of Highways

Several hours of wind gusts to 50 to 60 mph occurred at the South Dakota Road Weather Information System site near Kimball (SD537), with a peak wind gust of 62 mph.

High Wind in MCCOOK, SOUTH DAKOTA
From 12-NOV-21 02:00:00 to 12-NOV-21 08:00:00 (CST-6)
Magnitude: 52.00 MG
Reported by: Department of Highways

During several hours which featured sustained winds of 30 to 38 mph with wind gusts of 50 to 55 mph, a wind gust of 60 mph was measured by the South Dakota Road Weather Information System site near Montrose (SD547).

High Wind in SANBORN, SOUTH DAKOTA
From 12-NOV-21 04:00:00 to 12-NOV-21 08:00:00 (CST-6)
Magnitude: 53.00 MG
Reported by: ASOS

Wind gusts over several hours varied from 50 to 60 mph, with a peak gust of 61 mph measured by the South Dakota Road Weather Information System site near Wolsey (SD587) and the Automated Surface Observing System at Mitchell (KMHE).

High Wind in BEADLE, SOUTH DAKOTA
From 12-NOV-21 05:00:00 to 12-NOV-21 07:00:00 (CST-6)
Magnitude: 53.00 MG
Reported by: Department of Highways

Overall, winds were sustained from 30 to 38 mph for numerous hours, with a wind gust of 61 mph measured at the South Dakota Road Weather Information System site near Wolsey (SD587).

High Wind in JERAULD, SOUTH DAKOTA
From 11-NOV-21 19:00:00 to 12-NOV-21 06:00:00 (CST-6)
Magnitude: 50.00 MG
Reported by: Department of Highways

Several hours of sustained winds of 30 to 40 mph occurred at both the RAWS site 10 miles south-southwest of Wessington (RHUS2) and the South Dakota Road Weather Information System sites near Plankinton (SD553) and Gann Valley (SD531), the latter each measuring a peak wind gust of 58 mph.

High Wind in MOODY, SOUTH DAKOTA
From 12-NOV-21 02:00:00 to 12-NOV-21 10:30:00 (CST-6)
Magnitude: 50.00 MG
Reported by: Department of Highways

Sustained winds periodically reached 40 to 45 mph, with the South Dakota Road Weather Information System site near Ward (SD577) measuring a peak wind gust of 58 mph.

High Wind in DAVISON, SOUTH DAKOTA
From 12-NOV-21 04:00:00 to 12-NOV-21 09:00:00 (CST-6)
Magnitude: 53.00 MG
Reported by: ASOS

During several hours with sustained winds from 30 to 40 mph and gusts of 50 to 60 mph, the Automated Surface Observing System at Mitchell (KMHE) measured a peak wind gust of 61 mph.

High Wind in HANSON, SOUTH DAKOTA
From 12-NOV-21 05:00:00 to 12-NOV-21 09:00:00 (CST-6)
Magnitude: 53.00 MG
Reported by: Department of Highways

During several hours with sustained winds from 30 to 40 mph and gusts of 50 to 60 mph, the South Dakota Road Weather Information System site near Alexandria (SD502)  measured a peak wind gust of 61 mph.

High Wind in HUTCHINSON, SOUTH DAKOTA
From 11-NOV-21 12:00:00 to 12-NOV-21 09:00:00 (CST-6)
Magnitude: 51.00 MG
Reported by: Department of Highways

Sustained winds periodically reached 40 to 45 mph, with the South Dakota Road Weather Information System site near Freeman (SD530) measuring a peak wind gust of 59 mph.

High Wind in GREGORY, SOUTH DAKOTA
From 11-NOV-21 11:00:00 to 12-NOV-21 05:00:00 (CST-6)
Magnitude: 64.00 MG
Reported by: Department of Highways

Sustained winds periodically reached 40 to 45 mph, with the South Dakota Road Weather Information System site near Fort Randall Dam (SD588) measuring a peak wind gust of 74 mph and the site near Dixon (SD589) measuring a peak gust of 72 mph.

High Wind in CHARLES MIX, SOUTH DAKOTA
From 11-NOV-21 15:00:00 to 12-NOV-21 05:00:00 (CST-6)
Magnitude: 63.00 MG
Reported by: Department of Highways

Sustained winds periodically reached 40 to 45 mph, with the South Dakota Road Weather Information System site at the Platte-Winner Bridge (SD554) measuring a peak wind gust of 73 mph.