Strong winds, which were slowly decreasing after a snowfall, combined with bitterly cold arctic air to drive wind chills to 35 to 50 degrees below zero from late on December 17th through the morning of December 18th.

Cold/Wind Chill in KINGSBURY, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in BEADLE, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 31 below zero at Huron.

Cold/Wind Chill in BROOKINGS, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 28 below zero at Brookings.

Cold/Wind Chill in JERAULD, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in SANBORN, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in MINER, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record of 29 below zero at Howard.

Cold/Wind Chill in LAKE, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record of 31 below zero near Madison.

Cold/Wind Chill in MOODY, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in BRULE, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 23 below zero 5 miles south of Chamberlain.

Cold/Wind Chill in AURORA, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 25 below zero at White Lake.

Cold/Wind Chill in HANSON, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in DAVISON, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 28 below zero at Mitchell.

Cold/Wind Chill in MCCOOK, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in MINNEHAHA, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 27 below zero at Sioux Falls.

Cold/Wind Chill in TURNER, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in LINCOLN, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in GREGORY, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in CHARLES MIX, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero near Academy.

Cold/Wind Chill in DOUGLAS, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.

Cold/Wind Chill in HUTCHINSON, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero at Menno.

Cold/Wind Chill in BON HOMME, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 23 below zero at Tyndall.

Cold/Wind Chill in YANKTON, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 27 below zero near Yankton.

Cold/Wind Chill in CLAY, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero near Vermillion.

Cold/Wind Chill in UNION, SOUTH DAKOTA
From 17-DEC-16 15:00:00 to 18-DEC-16 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.