A winter storm resulted in warm-air advection precipitation lifting from south to north across northeast Nebraska, northwest Iowa, southeast South Dakota, and southwest Minnesota during the afternoon and evening of December 8th and continuing into the early morning hours of December 9th. Initially, the precipitation fell as light freezing drizzle or rain, but quickly transitioned to snow. While light to moderate snow persisted for much of the evening, heavy snow fell in a narrow convective-like band where rates exceeded 2 to 3 inches per hour. Thunder-snow was also observed with very large (plate-like) aggregates. Within this band, which stretched from near Mitchell to Sioux Falls to Spencer, snowfall amounts exceeded 6 inches with some isolated areas picking up 9 to 10 inches. Light winds persisted throughout the event, so reductions in visibility were related to the snowfall rate.

Winter Storm in BRULE, SOUTH DAKOTA
From 08-DEC-22 16:15:00 to 09-DEC-22 01:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 6.0 inches at the CoCoRaHS site 1.9 miles south of Pukwana and 4.1 inches at the COOP site 5 miles south of Chamberlain.

Winter Weather in AURORA, SOUTH DAKOTA
From 08-DEC-22 16:30:00 to 09-DEC-22 01:30:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 5.0 inches at the CoCoRaHS site 3.8 miles southwest of Stickney and 3.8 inches at the COOP site in White Lake.

Winter Weather in DOUGLAS, SOUTH DAKOTA
From 08-DEC-22 16:00:00 to 09-DEC-22 01:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 5.7 inches at the CoCoRaHS site 10.2 miles west of Dimock and 4.8 inches at the CoCoRaHS site 0.1 miles south-southeast of Corsica.

Winter Weather in HUTCHINSON, SOUTH DAKOTA
From 08-DEC-22 16:30:00 to 09-DEC-22 02:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 4.5 inches at the CoCoRaHS site 10.8 miles south of Emery and 3.0 inches at the CoCoRaHS site 0.1 miles northwest of Parkston.

Winter Weather in DAVISON, SOUTH DAKOTA
From 08-DEC-22 17:00:00 to 09-DEC-22 01:45:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 5.0 inches at the CoCoRaHS site 7.3 miles south of Mitchell and 4.6 inches at the COOP site in Mitchell (KMHE).

Winter Storm in HANSON, SOUTH DAKOTA
From 08-DEC-22 17:30:00 to 09-DEC-22 02:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 6.0 inches at the COOP site in Alexandria.

Winter Storm in MCCOOK, SOUTH DAKOTA
From 08-DEC-22 17:30:00 to 09-DEC-22 02:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 8.0 inches at the COOP site in Bridgewater, 7.0 inches at the COOP site 5 miles northeast of Salem, 7.5 inches at the CoCoRaHS site 5.8 miles northwest of Montrose, and 6.0 inches at the COOP site in Montrose.

Winter Weather in TURNER, SOUTH DAKOTA
From 08-DEC-22 16:45:00 to 09-DEC-22 02:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 4.5 inches at the COOP site in Marion and 2.5 inches at the CoCoRaHS site 0.2 miles south of Hurley.

Winter Storm in MINNEHAHA, SOUTH DAKOTA
From 08-DEC-22 17:30:00 to 09-DEC-22 03:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 7.4 inches at the COOP site (KFSD) in Sioux Falls, 10.0 inches at the CoCoRaHS site 6.9 miles west of Garretson, 8.1 inches at the CoCoRaHS site 0.5 miles north of Hartford, and 10.0 inches at the CoCoRaHS site 6.4 miles south of Hartford. Other reports around the Sioux Falls metropolitan area generally ranged from 6 to 10 inches.

Winter Storm in LINCOLN, SOUTH DAKOTA
From 08-DEC-22 17:00:00 to 09-DEC-22 03:30:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 9.2 inches at the CoCoRaHS site 3.6 miles south-southeast of Sioux Falls, 7.1 inches at the COOP site in Canton, and 7.4 inches at the CoCoRaHS site 0.8 miles north-northeast of Harrisburg. Other reports around the Sioux Falls metropolitan area generally ranged from 6 to 10 inches.

Winter Storm in CLAY, SOUTH DAKOTA
From 08-DEC-22 15:30:00 to 09-DEC-22 03:15:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 7.0 inches at the COOP site in Vermillion and 3.5 inches at the CoCoRaHS site 1.4 miles southeast of Vermillion.

Winter Weather in JERAULD, SOUTH DAKOTA
From 08-DEC-22 19:00:00 to 09-DEC-22 01:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 2.0 inches at the COOP site in Wessington Springs.

Winter Weather in SANBORN, SOUTH DAKOTA
From 08-DEC-22 18:30:00 to 09-DEC-22 02:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 5.0 inches at the COOP site 4 miles north-northeast of Forestburg and 3.5 inches at the CoCoRaHS site 0.2 miles west-southwest of Woonsocket.

Winter Storm in MINER, SOUTH DAKOTA
From 08-DEC-22 19:00:00 to 09-DEC-22 02:15:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 7.8 inches at the CoCoRaHS site 5.3 miles west of Howard.

Winter Weather in LAKE, SOUTH DAKOTA
From 08-DEC-22 19:00:00 to 09-DEC-22 02:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 5.6 inches at the COOP site 2 miles southeast of Madison.

Winter Weather in MOODY, SOUTH DAKOTA
From 08-DEC-22 19:30:00 to 09-DEC-22 03:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 4.7 inches at the COOP site in Flandreau and 3.5 inches at the CoCoRaHS site 10.6 miles north of Colman.

Winter Weather in BROOKINGS, SOUTH DAKOTA
From 08-DEC-22 21:30:00 to 09-DEC-22 04:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a light glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 2.9 inches at the CoCoRaHS site 1 mile south of Brookings and 2.5 inches at the COOP site 2 miles northeast of Brookings.

Winter Weather in KINGSBURY, SOUTH DAKOTA
From 08-DEC-22 20:30:00 to 09-DEC-22 01:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a light glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 1.0 inch at the COOP site in Iroquois and 1.0 inch at the COOP site in De Smet.

Winter Weather in UNION, SOUTH DAKOTA
From 08-DEC-22 15:30:00 to 09-DEC-22 04:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 3.5 inches at the CoCoRaHS site 5.6 miles north-northeast of Elk Point. Several vehicles slid into the ditch along Interstate 29 due to slick road conditions.

Winter Weather in YANKTON, SOUTH DAKOTA
From 08-DEC-22 15:30:00 to 09-DEC-22 02:15:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 3.0 inches at the COOP site 2 miles east of Yankton and 2.4 inches at the CoCoRaHS site 0.3 miles east-northeast of Yankton.

Winter Weather in BON HOMME, SOUTH DAKOTA
From 08-DEC-22 15:30:00 to 09-DEC-22 01:30:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 2.5 inches at the COOP site in Tyndall and 1.5 inches at the CoCoRaHS site 7.6 miles west-northwest of Springfield.

Winter Weather in CHARLES MIX, SOUTH DAKOTA
From 08-DEC-22 15:30:00 to 09-DEC-22 01:00:00 (CST-6)
Reported by: COOP Observer

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 4.0 inches at the COOP site 2 miles northeast of Academy and 3.0 inches at the COOP site in Platte.

Winter Storm in GREGORY, SOUTH DAKOTA
From 08-DEC-22 15:00:00 to 09-DEC-22 00:00:00 (CST-6)
Reported by: CoCoRaHS

Light freezing rain or drizzle resulted in a glaze of ice. Precipitation then quickly transitioned to snow, accumulating to 6.5 inches at the CoCoRaHS site 8.7 miles north of Gregory, 3.0 inches at the COOP site in Gregory, 3.0 inches at the COOP site 4 miles south-southwest of Pickstown, and 2.0 inches at the CoCoRaHS site 4.2 miles southwest of Burke.