A large ridge of high pressure combined with a retreating area of low pressure across the southern Great Lakes, to produce strong northwest winds of 15 to 30 mph for western and southern Minnesota.  As temperatures fell into the teens below zero, wind chills values averaged between 25 and 45 below zero from Thursday evening through Friday morning.
The following are some communities that had measured wind chills during this time period.
Morris in Stevens County had a low wind chill of 42 below.
Appleton in western Swift County had a low wind chill of 41 below.
Madison in Lac Qui Parle County had a low wind chill of 38 below.
Canby in Yellow Medicine County had a low wind chill of 37 below.

Extreme Cold/Wind Chill in DOUGLAS, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 30 degrees below zero. The Alexandria airport recorded a low wind chill of 31 below at 9 pm.

Extreme Cold/Wind Chill in BLUE EARTH, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds combined with low temperatures to produce several hours of wind chill values of 20 to 30 degrees below zero.

Extreme Cold/Wind Chill in BROWN, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 20 to 35 degrees below zero. The St. James airport recorded several wind chill values of 30 below zero between 6 pm and midnight.

Extreme Cold/Wind Chill in YELLOW MEDICINE, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds combined with low temperatures to produce several hours of wind chill values of 30 to 40 degrees below zero. The Canby airport recorded several hours of wind chill values of 37 below between midnight and 6 am.

Extreme Cold/Wind Chill in STEVENS, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 30 to 40 degrees below zero. The Morris airport recorded a low wind chill value of 42 below at 7 am.

Extreme Cold/Wind Chill in WATONWAN, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 30 degrees below zero. The St. James airport recorded several low wind chill values of 30 below between 6 pm and midnight.

Extreme Cold/Wind Chill in SWIFT, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 30 to 40 degrees below zero. The Appleton airport recorded a low wind chill value of 41 below at 9 am.

Extreme Cold/Wind Chill in POPE, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 30 degrees below zero. The Glenwood airport recorded a low wind chill value of 30 below at 9 pm.

Extreme Cold/Wind Chill in REDWOOD, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 35 degrees below zero. The Redwood Falls airport recorded a low wind chill value of 31 below at 7 pm.

Extreme Cold/Wind Chill in RENVILLE, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 35 degrees below zero. The Olivia airport recorded a low wind chill value of 34 below at 6 pm.

Extreme Cold/Wind Chill in CHIPPEWA, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 35 degrees below zero.  The Montevideo airport reported a low wind chill of 35 below zero at 9 am.

Extreme Cold/Wind Chill in LAC QUI PARLE, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds combined with low temperatures to produce several hours of wind chill values of 30 to 40 degrees below zero. The Madison airport recorded a low wind chill of 38 below at 7 am.

Extreme Cold/Wind Chill in MARTIN, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 35 degrees below zero. The Fairmont airport recorded a low wind chill of 35 below at 7 pm.

Extreme Cold/Wind Chill in NICOLLET, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 30 degrees below zero.

Extreme Cold/Wind Chill in FARIBAULT, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 30 degrees below zero.

Extreme Cold/Wind Chill in KANDIYOHI, MINNESOTA
From 07-JAN-10 18:00:00 to 08-JAN-10 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Strong winds combined with low temperatures to produce several hours of wind chill values of 25 to 40 degrees below zero.