As a shortwave disturbance rotated around a large southwest U.S. closed low aloft and into confluent flow aloft across the Northern Plains, light wintry precipitation developed on December 31.  An arctic front surged southward early in the day with winds increasing to a gusty 30 to 50 mph, creating areas of blowing snow and visibility less than a half mile at times, as well as dangerously cold wind chills by late afternoon and evening of December 31.

Cold/Wind Chill in BRULE, SOUTH DAKOTA
From 31-DEC-18 20:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to three inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -23 at Chamberlain during the evening hours.

Cold/Wind Chill in MOODY, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -33 at Flandreau during the evening hours.

Cold/Wind Chill in AURORA, SOUTH DAKOTA
From 31-DEC-18 19:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -30 at White Lake during the evening hours.

Cold/Wind Chill in DAVISON, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -28 at Mitchell during the evening hours.

Winter Weather in KINGSBURY, SOUTH DAKOTA
From 31-DEC-18 05:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Brief light freezing rain produced a glaze of icing before changing to snow by 0800CST.  Snow accumulated to 1 to 2 inches, and while winds gusted as high as 45 mph at De Smet, blowing snow with periods of visibility of one-half mile or less occurred between 0800-1600CST with no travel recommended.

Winter Weather in DOUGLAS, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 39 mph at Parkston and 52 mph near Geddes, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in BEADLE, SOUTH DAKOTA
From 31-DEC-18 04:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Brief light freezing rain produced a glaze of icing before changing to snow by 0800CST.  Snow accumulated to 1.1 inches at Huron, and while winds gusted as high as 48 mph, blowing snow with periods of visibility of one-half mile or less occurred between 0800-1600CST with travel not recommended.

Winter Weather in BROOKINGS, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Brief light freezing rain produced a glaze of icing before changing to snow by 0800CST.  Snow accumulated to 1 to 2 inches, and while winds gusted as high as 35 mph at Volga and Brookings, blowing snow with periods of visibility of one-half mile or less occurred between 1300-1700CST.

Winter Weather in JERAULD, SOUTH DAKOTA
From 31-DEC-18 06:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Brief light freezing rain produced a glaze of icing before changing to snow by 0800CST.  Snow accumulated to 1 to 2 inches, and while winds gusted as high as 50 mph 10 miles north of Wessington Springs, some brief periods of blowing snow with visibility around one-half mile occurred between 0900-1400CST with no travel recommended.

Winter Weather in HUTCHINSON, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 39 mph at Parkston, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in TURNER, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 42 mph at Yankton and 41 mph at Sioux Falls, periods of blowing snow with visibility of one-half mile or less occurred between 1200-1800CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in LINCOLN, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 42 mph at Yankton and 41 mph at Sioux Falls, periods of blowing snow with visibility of one-half mile or less occurred between 1200-1800CST.  Travel was not recommended due to near-whiteout conditions.

Cold/Wind Chill in MCCOOK, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -28 at Mitchell and -20 at Sioux Falls during the evening hours.

Cold/Wind Chill in HANSON, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -28 at Mitchell during the evening hours.

Cold/Wind Chill in MINNEHAHA, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -29 at Colton and -20 at Sioux Falls during the evening hours.

Cold/Wind Chill in LINCOLN, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -29 at Colton and -20 at Sioux Falls during the evening hours.

Winter Weather in SANBORN, SOUTH DAKOTA
From 31-DEC-18 08:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 48 mph at Huron and 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.

Winter Weather in MINER, SOUTH DAKOTA
From 31-DEC-18 08:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 48 mph at Huron and 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.

Winter Weather in LAKE, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 45 mph at Madison, periods of blowing snow with visibility of one-half mile or less occurred between 1000-1700CST.

Winter Weather in MOODY, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 40 mph at Flandreau, periods of blowing snow with visibility of one-half mile or less occurred between 1100-1800CST.

Winter Weather in BON HOMME, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 52 mph near Geddes and 42 mph at Yankton, periods of blowing snow with visibility of one-half mile or less occurred between 1200-1700CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in YANKTON, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 42 mph at Yankton, periods of blowing snow with visibility of one-half mile or less occurred between 1100-1800CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in CLAY, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 42 mph at Yankton and 36 mph near Beresford, periods of blowing snow with visibility of one-half mile or less occurred between 1100-1800CST.  Travel was not recommended due to near-whiteout conditions.

Cold/Wind Chill in BEADLE, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased as temperatures plummeted, taking wind chill values at Huron as low as -32 during the evening hours.

Cold/Wind Chill in KINGSBURY, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -32 at Huron and -28 at Brookings during the evening hours.

Cold/Wind Chill in BROOKINGS, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -28 at Brookings during the evening hours.

Winter Weather in MCCOOK, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 41 mph at Sioux Falls and 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 1000-1800CST.  Travel was not recommended due to spotty near-whiteout conditions.

Winter Weather in MINNEHAHA, SOUTH DAKOTA
From 31-DEC-18 10:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 37 mph at Colton and 41 mph at Sioux Falls, periods of blowing snow with visibility of one-half mile or less occurred between 1100-1800CST.  Travel was not recommended outside the Sioux Falls metro area due to spotty near-whiteout conditions.

Cold/Wind Chill in HUTCHINSON, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -29 at Parkston and -28 at Mitchell during the evening hours.

Cold/Wind Chill in TURNER, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -25 at Yankton and -20 at Sioux Falls during the evening hours.

Cold/Wind Chill in DOUGLAS, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -29 at Parkston and -23 near Geddes during the evening hours.

Cold/Wind Chill in GREGORY, SOUTH DAKOTA
From 31-DEC-18 20:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

After one to two inches of snowfall, winds increased to 35 to 50 mph as temperatures plummeted, taking wind chill values as low as -22 at Winner and -23 near Geddes during the evening hours.

Winter Weather in HANSON, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 41 mph at Sioux Falls and 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 1000-1800CST.  Travel was not recommended due to spotty near-whiteout conditions.

Winter Weather in DAVISON, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to spotty near-whiteout conditions.

Cold/Wind Chill in JERAULD, SOUTH DAKOTA
From 31-DEC-18 19:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -32 at Huron, -23 at Chamberlain and -30 at White Lake during the evening hours.

Cold/Wind Chill in SANBORN, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -32 at Huron and -28 at Mitchell during the evening hours.

Cold/Wind Chill in MINER, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -32 at Huron and -26 at Madison during the evening hours.

Cold/Wind Chill in LAKE, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 45 mph as temperatures plummeted, taking wind chill values as low as -26 at Madison during the evening hours.

Cold/Wind Chill in BON HOMME, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 50 mph as temperatures plummeted, taking wind chill values as low as -23 near Geddes  and -25 at Yankton during the evening hours.

Winter Weather in AURORA, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 39 mph at White Lake and 47 mph at Mitchell, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to spotty near-whiteout conditions.

Winter Weather in BRULE, SOUTH DAKOTA
From 31-DEC-18 08:00:00 to 31-DEC-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 3 inches, and while winds gusted as high as 40 mph at Chamberlain, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to near-whiteout conditions.

Cold/Wind Chill in CHARLES MIX, SOUTH DAKOTA
From 31-DEC-18 19:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

After one to two inches of snowfall, winds increased to 35 to 50 mph as temperatures plummeted, taking wind chill values as low as -23 near Geddes during the evening hours.

Cold/Wind Chill in YANKTON, SOUTH DAKOTA
From 31-DEC-18 18:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 50 mph as temperatures plummeted, taking wind chill values as low as -25 at Yankton during the evening hours.

Cold/Wind Chill in CLAY, SOUTH DAKOTA
From 31-DEC-18 20:00:00 to 31-DEC-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

After one to two inches of snowfall, winds increased to 35 to 50 mph as temperatures plummeted, taking wind chill values as low as -25 at Yankton and -20 near Beresford during the evening hours.

Winter Weather in GREGORY, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Snow accumulated to 1 to 4 inches, and while winds gusted as high as 43 mph at Winner and 40 mph at Chamberlain, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to near-whiteout conditions.

Winter Weather in CHARLES MIX, SOUTH DAKOTA
From 31-DEC-18 09:00:00 to 31-DEC-18 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Snow accumulated to 1 to 2 inches, and while winds gusted as high as 52 mph near Geddes and 40 mph at Chamberlain, periods of blowing snow with visibility of one-half mile or less occurred between 0900-1700CST.  Travel was not recommended due to near-whiteout conditions.