Southward pushing cold air near the surface interacted with a post-frontal wave in southwest flow aloft to produce a prolonged period of light snowfall, which began as a period of light freezing rain and freezing drizzle across far southeast South Dakota during the afternoon and early evening of February 21.  In addition to snowfall which accumulated from as much as 1 to 3 inches, strong northerly winds produced dangerous wind chills from 25 below to 35 below zero from later on February 21 through the afternoon of February 22.

Winter Weather in MCCOOK, SOUTH DAKOTA
From 21-FEB-22 14:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon of February 21.  Precipitation changed to light snow, and while amounts were not significant with 1.5 inches at Bridgewater and 1.0 inch 5 miles northeast of Salem, when combined with winds which gusted as high as 46 mph near Montrose and 36 mph at Canova, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1000CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in MINNEHAHA, SOUTH DAKOTA
From 21-FEB-22 15:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: Official NWS Observations

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Slick roads caused a two-car accident in the northern portion of Sioux Falls which resulted in the fatality (indirect) of one driver. Precipitation changed to light snow, and while amounts were not significant with between 1.5 and 2.5 inches around Sioux Falls and 1.5 inches at Colton, when combined with winds which gusted as high as 45 mph near Dell Rapids and 40 mph at Sioux Falls, visibility was occasionally one mile or less and briefly less than one-half mile between 0700-1000CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in LINCOLN, SOUTH DAKOTA
From 21-FEB-22 15:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 1.5 to 2.0 inches on the south side of Sioux Falls and 1.2 inches in Canton, when combined with winds which gusted as high as 41 mph near Davis and 32 mph at Canton, visibility was occasionally one mile or less between 0800-1200CST February 22.  In addition, wind chill was as low as -25F.

Winter Weather in TURNER, SOUTH DAKOTA
From 21-FEB-22 14:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: Department of Highways

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon of February 21.  Precipitation changed to light snow, with 4.8 inches in Marion and 2.6 inches in Hurley. When combined with winds which gusted as high as 46 mph near Freeman and 41 mph near Davis, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1000CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in DOUGLAS, SOUTH DAKOTA
From 21-FEB-22 10:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: Mesonet

While snowfall was not significant by amount with 1.0 inches near Platte and 11 miles south of Emery, when combined with winds which gusted as high as 37 mph at Parkston and Wagner, visibility was occasionally one mile or less between 0900-1500CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in BON HOMME, SOUTH DAKOTA
From 21-FEB-22 14:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 1.4 inches at Tyndall, when combined with winds which gusted as high as 44 mph near Tyndall, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1400CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in YANKTON, SOUTH DAKOTA
From 21-FEB-22 15:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

Preceded by a brief period of light freezing drizzle, the change to snowfall was not significant by amount with 2.0 inches at Yankton. When combined with winds which gusted as high as 45 mph near Gayville and 40 mph at Yankton, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1500CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in CLAY, SOUTH DAKOTA
From 21-FEB-22 15:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21.  Precipitation changed to light snow, with 1.4 inches in Vermillion and 1.0 inch near Centerville. When combined with winds which gusted as high as 37 mph near Vermillion and 36 mph at Centerville, visibility was occasionally one mile or less between 0600-1200CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in UNION, SOUTH DAKOTA
From 21-FEB-22 16:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: Department of Highways

A period of freezing drizzle produced a thin glaze of ice on surfaces during the late afternoon and early evening of February 21. Precipitation changed to light snow, and while amounts were not significant with 1.2 inches near Elk Point, when combined with winds which gusted as high as 38 mph near Beresford and 36 mph at North Sioux City, visibility was occasionally one mile or less between 0800-1200CST February 22.  In addition, wind chill was as low as -25F.

Winter Weather in BEADLE, SOUTH DAKOTA
From 21-FEB-22 12:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 2.3 inches 2 miles southeast of Wessington and 1.9 inches at Huron, when combined with winds which gusted to 45 mph at Huron and 44 mph near Wolsey and Cavour, visibility was occasionally one mile or less between 0500-1600CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in KINGSBURY, SOUTH DAKOTA
From 21-FEB-22 13:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 2.9 inches at Iroquois and 1.0 inch at De Smet, when combined with winds which gusted to 40 mph near Arlington and 32 mph at De Smet, visibility was occasionally one mile or less between 0600-1300CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in MOODY, SOUTH DAKOTA
From 21-FEB-22 14:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 1.6 inches at Flandreau, when combined with winds which gusted to 43 mph 13 miles west of Ward and 37 mph at Flandreau, visibility was occasionally one mile or less between 0700-1100CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in LAKE, SOUTH DAKOTA
From 21-FEB-22 15:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 0.8 inch at Madison, when combined with winds which gusted to 39 mph at Madison, visibility was briefly one mile or less between 0700-1100CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in MINER, SOUTH DAKOTA
From 21-FEB-22 14:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 0.5 inch at Howard, when combined with winds which gusted to 43 mph near Howard, visibility was briefly one mile or less between 0700-1100CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in SANBORN, SOUTH DAKOTA
From 21-FEB-22 12:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 1.3 inches at Woonsocket, when combined with winds which gusted as high as 44 mph near Forestburg, visibility was occasionally one mile or less between 0600-1400CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in JERAULD, SOUTH DAKOTA
From 21-FEB-22 11:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 3.0 inches at Wessington Springs, when combined with winds which gusted as high as 34 mph at Wessington Springs, visibility was briefly one mile or less between 0800-1500CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in BRULE, SOUTH DAKOTA
From 21-FEB-22 09:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 3.0 inches at Pukwana and Chamberlain, when combined with winds which gusted as high as 43 mph at Kimball and 35 mph at Chamberlain, visibility was occasionally one mile or less between 0900-1500CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in AURORA, SOUTH DAKOTA
From 21-FEB-22 10:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 1.5 inches at White Lake, when combined with winds which gusted as high as 43 mph at Plankinton and 35 mph at White Lake, visibility was occasionally one mile or less between 0800-1500CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in DAVISON, SOUTH DAKOTA
From 21-FEB-22 10:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 0.5 inch at Mitchell, when combined with winds which gusted as high as 43 mph at Mitchell, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1500CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in HANSON, SOUTH DAKOTA
From 21-FEB-22 12:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 0.5 inch at Alexandria, when combined with winds which gusted as high as 48 mph at Alexandria, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1300CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in GREGORY, SOUTH DAKOTA
From 21-FEB-22 12:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 2.0 inches at Gregory, 1.5 inches near Burke, and 1.0 inch near Pickstown, when combined with winds which gusted as high as 50 mph near Pickstown, 37 mph near Fairfax, and 36 mph at Gregory, visibility was occasionally one mile or less between 0900-1500CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in BROOKINGS, SOUTH DAKOTA
From 21-FEB-22 13:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 2.1 inches at Brookings and 2.0 inches near Astoria and 5 miles west of Bruce, when combined with winds which gusted to 36 mph near Astoria, 33 mph at Volga, and 31 mph at Elkton, visibility was occasionally one mile or less between 0700-1200CST February 22.  In addition, wind chill was as low as -25F to -35F.

Winter Weather in HUTCHINSON, SOUTH DAKOTA
From 21-FEB-22 13:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 2.5 inches at Menno and 1.0 inch 11 miles south of Emery, when combined with winds which gusted as high as 46 mph near Freeman, 44 mph at Tripp, and 37 mph at Parkston, visibility was occasionally one mile or less and briefly less than one-half mile between 0600-1400CST February 22.  In addition, wind chill was as low as -25F to -30F.

Winter Weather in CHARLES MIX, SOUTH DAKOTA
From 21-FEB-22 13:00:00 to 22-FEB-22 18:00:00 (CST-6)
Reported by: COOP Observer

While snowfall was not significant by amount with 1.2 inches near Academy and 1.0 inch at Platte, when combined with winds which gusted as high as 45 mph 10 miles west of Platte, 43 mph near Geddes, and 37 mph at Wagner, visibility was occasionally one mile or less between 0800-1500CST February 22.  In addition, wind chill was as low as -25F to -35F.