With arctic air in place over western Wisconsin, air temperatures dropped into the 20s below zero from January 29th into January 31st. A few sites recorded temperatures in the 30s below zero on the morning of the 30th with several sites falling into the 30s and 40s below zero on the morning of the 31st. When combined with wind speeds of 5 to 25 mph, wind chills of 35 to 60 below were common. The coldest wind chill to occur was 57 below zero in Medford (Taylor County) during the morning of January 30th. One person suffered hypothermia related injuries near Hazel Green (Grant County) when they were found outdoors after about an hour. A power outage occurred across northern Grant County during the morning of January 30th that affected approximately 360 households. The Governor of Wisconsin declared a state of emergency because of the cold weather. Most western Wisconsin schools were closed from January 28th through the 31st. La Crosse (La Crosse County) city libraries closed because of the cold and this had never occurred in the past 34 years. The U.S. Post Office suspended delivery operations across all of western Wisconsin on January 30th and 31st. Classes at UW-La Crosse were canceled on January 30th and 31st while both Viterbo and Western Technical College canceled classes on the 30th and the morning of the 31st. More than 1,000 elderly people across La Crosse County did not receive meals during the cold outbreak as the county's senior nutrition program was closed.

Extreme Cold/Wind Chill in TREMPEALEAU, WISCONSIN
From 29-JAN-19 18:05:00 to 31-JAN-19 09:40:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across Trempealeau County from the evening of January 29th into the morning of the 31st.

Extreme Cold/Wind Chill in VERNON, WISCONSIN
From 29-JAN-19 17:35:00 to 31-JAN-19 08:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 55 below zero were common across Vernon County from the late afternoon of January 29th into the morning of the 31st. The coldest wind chill to occur was 55 below zero at the automated weather observing equipment for the Viroqua airport.

Extreme Cold/Wind Chill in LA CROSSE, WISCONSIN
From 29-JAN-19 17:55:00 to 31-JAN-19 11:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across La Crosse County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 52 below zero at a mesonet station near St. Joseph. La Crosse city libraries closed due to the cold and this had never occurred in the past 34 years. Classes at UW-La Crosse were canceled on January 30th and 31st while both Viterbo and Western Technical College canceled classes on the 30th and the morning of the 31st. More than 1,000 elderly people across La Crosse County did not receive meals during the cold outbreak as the county's senior nutrition program was closed.

Extreme Cold/Wind Chill in ADAMS, WISCONSIN
From 29-JAN-19 19:55:00 to 31-JAN-19 09:05:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across Adams County from the evening of January 29th into the morning of the 31st.

Extreme Cold/Wind Chill in BUFFALO, WISCONSIN
From 29-JAN-19 16:35:00 to 31-JAN-19 10:25:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across Buffalo County from the afternoon of January 29th into the morning of the 31st. The coldest wind chill to occur was 52 below zero at a mesonet station in Cochrane.

Extreme Cold/Wind Chill in CLARK, WISCONSIN
From 29-JAN-19 17:35:00 to 31-JAN-19 09:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across Clark County from the afternoon of January 29th into the morning of the 31st. The coldest wind chill to occur was 53 below zero at a mesonet station in Loyal.

Extreme Cold/Wind Chill in CRAWFORD, WISCONSIN
From 29-JAN-19 18:35:00 to 31-JAN-19 09:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 55 below zero were common across Crawford County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 52 degrees below zero at the automated weather observing equipment for the Prairie du Chien airport.

Extreme Cold/Wind Chill in GRANT, WISCONSIN
From 29-JAN-19 19:15:00 to 31-JAN-19 09:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 55 below zero were common across Grant County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 55 below zero at the automated weather observing equipment for the Platteville airport. Near Hazel Green, one person was outside for about an hour and suffered hypothermia related injuries. A power outage during the morning of January 30th affected about 360 households in Boscobel and Blue River and the surrounding rural areas.

Extreme Cold/Wind Chill in JACKSON, WISCONSIN
From 29-JAN-19 20:15:00 to 31-JAN-19 08:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 55 below zero were common across Jackson County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 54 below zero at the automated weather observing equipment for the Black River Falls airport.

Extreme Cold/Wind Chill in JUNEAU, WISCONSIN
From 29-JAN-19 19:35:00 to 31-JAN-19 08:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 55 below zero were common across Juneau County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 53 below zero at the automated weather observing equipment for Volk Field.

Extreme Cold/Wind Chill in MONROE, WISCONSIN
From 29-JAN-19 19:15:00 to 31-JAN-19 08:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 50 below zero were common across Monroe County from the evening of January 29th into the morning of the 31st. The coldest wind chill to occur was 50 below zero at the automated weather observing equipment for the Sparta airport.

Extreme Cold/Wind Chill in RICHLAND, WISCONSIN
From 29-JAN-19 18:05:00 to 31-JAN-19 09:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind chills of 35 to 55 below zero were common across Richland County from the evening of January 29th into the morning of the 31st.

Extreme Cold/Wind Chill in TAYLOR, WISCONSIN
From 29-JAN-19 16:55:00 to 31-JAN-19 09:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind chills of 35 to 60 below zero were common across Taylor County from the late afternoon of January 29th into the morning of the 31st. The coldest wind chill to occur was 57 below zero at the automated weather observing equipment for the Medford airport.