A long-duration winter storm developed across southeast South Dakota on February 21, with waves of heavier snowfall across the region as winds increased to a gusty 30 to 50 mph.  Blizzard conditions developed during the afternoon of February 22, with strong winds lingering into the midday hours of February 23.  During the event, widespread blowing and drifting snowfall led to the closure of Interstate 90, as well as Interstate 29 north of Sioux Falls.  Travel was not recommended in numerous counties, with schools and county/state offices closed due to the hazardous conditions. Total snowfall varied from around 3 inches in extreme southeast South Dakota to around 17 inches near Huron.

Blizzard in TURNER, SOUTH DAKOTA
From 21-FEB-23 12:00:00 to 23-FEB-23 04:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 10.1 inches at Hurley and 8.5 inches at Marion.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 41 mph near Parker.

Blizzard in LINCOLN, SOUTH DAKOTA
From 21-FEB-23 18:00:00 to 23-FEB-23 04:00:00 (CST-6)
Reported by: AWOS

Over the two-day period, snowfall accumulated to 11.6 inches on the south side of Sioux Falls and 10.4 inches at Canton.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 45 mph 10 miles east of Davis.

Winter Storm in UNION, SOUTH DAKOTA
From 22-FEB-23 04:00:00 to 23-FEB-23 12:00:00 (CST-6)
Reported by: COOP Observer

Snowfall over the two-day period totaled 6.0 inches near Centerville and 4.6 inches at Vermillion. With winds which gusted to 41 mph near Beresford and 37 mph in North Sioux City, considerable blowing snow reduced visibility to one-half mile or less at times.

Blizzard in DOUGLAS, SOUTH DAKOTA
From 21-FEB-23 07:00:00 to 23-FEB-23 05:00:00 (CST-6)
Reported by: Department of Highways

Over the two-day period, snowfall accumulated to 10.3 inches 10 miles west of Dimock.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 41 mph near Corsica.

Blizzard in BEADLE, SOUTH DAKOTA
From 21-FEB-23 08:00:00 to 23-FEB-23 09:00:00 (CST-6)
Reported by: ASOS

Over the two-day period, snowfall accumulated to 17.0 inches at Huron and 12.5 inches near Wessington.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at around 40 mph at Huron, Wolsey, and Cavour.

Blizzard in GREGORY, SOUTH DAKOTA
From 21-FEB-23 20:30:00 to 23-FEB-23 02:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.0 inches 9 miles north of Gregory,  11.0 inches at Gregory, and 9.5 inches near Burke. Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 48 mph near Pickstown, 41 mph near Dallas and 40 mph near Dixon.

Blizzard in HUTCHINSON, SOUTH DAKOTA
From 21-FEB-23 08:00:00 to 23-FEB-23 04:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 10.0 inches at Menno and 8.0 inches at Parkston.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 40 mph near Tripp and Freeman.

Blizzard in LAKE, SOUTH DAKOTA
From 21-FEB-23 09:30:00 to 23-FEB-23 06:00:00 (CST-6)
Property damage: 500.00K
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.0 inches at Madison.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 44 mph at Madison. The weight of the resulting 10 to 15 foot snow drifts snapped a gas line near the meter, which resulted in an explosion that destroyed one home and damaged another. There were three indirect injuries in the incident.

Blizzard in MINNEHAHA, SOUTH DAKOTA
From 21-FEB-23 09:30:00 to 23-FEB-23 06:00:00 (CST-6)
Reported by: Official NWS Observations

Over the two-day period, snowfall accumulated to 14.2 inches near Renner, 13.8 inches in Sioux Falls, 13.7 inches in Hartford, and 13.0 inches in Colton.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 44 mph near Dell Rapids and in Sioux Falls.

Blizzard in BON HOMME, SOUTH DAKOTA
From 21-FEB-23 16:00:00 to 23-FEB-23 08:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 6.7 inches at Tyndall.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 40 mph near Tyndall.

Winter Storm in CLAY, SOUTH DAKOTA
From 22-FEB-23 04:00:00 to 23-FEB-23 12:00:00 (CST-6)
Reported by: COOP Observer

Snowfall over the two-day period totaled 6.0 inches near Centerville and 4.6 inches at Vermillion. With winds which gusted to 40 mph 7 miles west-southwest of Beresford, considerable blowing snow reduced visibility to one-half mile or less at times.

Blizzard in HANSON, SOUTH DAKOTA
From 21-FEB-23 09:00:00 to 23-FEB-23 06:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 9.0 inches at Alexandria.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 41 mph near Alexandria.

Blizzard in CHARLES MIX, SOUTH DAKOTA
From 21-FEB-23 07:00:00 to 23-FEB-23 04:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 7.0 inches at Platte and near Academy.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 40 mph 10 miles west of Platte and 36 mph near Platte.

Blizzard in BROOKINGS, SOUTH DAKOTA
From 21-FEB-23 10:00:00 to 23-FEB-23 07:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.5 inches near Bruce, 12.0 inches at White, and 10.5 inches at Brookings.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 41 mph at Brookings and 36 mph at Volga.

Blizzard in YANKTON, SOUTH DAKOTA
From 22-FEB-23 01:00:00 to 23-FEB-23 13:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 5.8 inches at Yankton.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 40 mph at Yankton and 39 mph near Gayville.

Blizzard in DAVISON, SOUTH DAKOTA
From 21-FEB-23 08:00:00 to 23-FEB-23 05:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.2 inches at Mitchell.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 38 mph at Mitchell.

Blizzard in SANBORN, SOUTH DAKOTA
From 21-FEB-23 08:00:00 to 23-FEB-23 07:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 15.0 inches at Forestburg and 14.9 inches at Woonsocket.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 42 mph near Forestburg.

Blizzard in MINER, SOUTH DAKOTA
From 21-FEB-23 09:00:00 to 23-FEB-23 07:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.4 inches at Howard.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 43 mph near Howard.

Blizzard in MCCOOK, SOUTH DAKOTA
From 21-FEB-23 09:00:00 to 23-FEB-23 06:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.0 inches near Salem, 12.0 inches 7 miles north of Parker, and 10.0 inches at Bridgewater and Montrose.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 53 mph near Montrose and 38 mph near Canova.

Blizzard in KINGSBURY, SOUTH DAKOTA
From 21-FEB-23 09:00:00 to 23-FEB-23 08:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.0 inches at De Smet and 11.5 inches at Iroquois.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 42 mph near Arlington.

Blizzard in MOODY, SOUTH DAKOTA
From 21-FEB-23 10:00:00 to 23-FEB-23 06:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 12.1 inches at Flandreau and 9.0 inches 11 miles north of Colman.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 45 mph 13 miles west of Ward and 44 mph at Flandreau.

Blizzard in BRULE, SOUTH DAKOTA
From 21-FEB-23 06:30:00 to 23-FEB-23 05:00:00 (CST-6)
Reported by: CoCoRaHS

Over the two-day period, snowfall accumulated to 13.7 inches at Chamberlain and 12.0 inches near Pukwana.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 45 mph at Kimball.

Blizzard in JERAULD, SOUTH DAKOTA
From 21-FEB-23 07:00:00 to 23-FEB-23 08:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 13.0 inches at Wessington Springs.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 42 mph near Lane.

Blizzard in AURORA, SOUTH DAKOTA
From 21-FEB-23 07:00:00 to 23-FEB-23 06:00:00 (CST-6)
Reported by: COOP Observer

Over the two-day period, snowfall accumulated to 8.5 inches near Stickney and 8.4 inches at White Lake.  Whiteout conditions became widespread, especially in rural areas, due to winds which peaked at 47 mph near Plankinton and 39 mph at White Lake.