High pressure situated over the eastern Pacific and a slow moving upper level closed low over the Great Lakes combined to put the upper Midwest, including Iowa, right in the cross hairs of northwest upper level flow and an Arctic air mass intrusion. Air temperatures plummeted below zero the evening of the 29th across much of the state, and did not rise back above zero in most locations until the afternoon on the 31st. Coldest temperatures were seen across northern and northeast Iowa where temperatures in the 20 to nearly 30 below range were common.  Given the temperatures, even nominal winds put areas into Wind Chill Advisory (-20 to -30 degrees F) with ease. Throughout the time period, many locations experienced wind chill values in the -40 to -55 degrees F range which were some of the coldest wind chills in over two decades.

Extreme Cold/Wind Chill in WEBSTER, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in HAMILTON, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in HARDIN, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in GRUNDY, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in BLACK HAWK, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in CRAWFORD, IOWA
From 29-JAN-19 18:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in CARROLL, IOWA
From 29-JAN-19 18:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

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

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

Extreme Cold/Wind Chill in STORY, IOWA
From 29-JAN-19 15:00:00 to 31-JAN-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in MARSHALL, IOWA
From 29-JAN-19 15:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in TAMA, IOWA
From 29-JAN-19 15:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in AUDUBON, IOWA
From 29-JAN-19 18:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in GUTHRIE, IOWA
From 29-JAN-19 18:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

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

Extreme Cold/Wind Chill in POLK, IOWA
From 29-JAN-19 18:00:00 to 31-JAN-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in JASPER, IOWA
From 29-JAN-19 18:00:00 to 31-JAN-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in POWESHIEK, IOWA
From 29-JAN-19 18:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in CASS, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in ADAIR, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in MADISON, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in ADAMS, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in UNION, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in CLARKE, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in LUCAS, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in TAYLOR, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in RINGGOLD, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in DECATUR, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in WAYNE, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in APPANOOSE, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in DAVIS, IOWA
From 29-JAN-19 21:00:00 to 30-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in WARREN, IOWA
From 29-JAN-19 21:00:00 to 31-JAN-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in MARION, IOWA
From 29-JAN-19 21:00:00 to 31-JAN-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in EMMET, IOWA
From 29-JAN-19 06:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in PALO ALTO, IOWA
From 29-JAN-19 06:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in KOSSUTH, IOWA
From 29-JAN-19 06:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in MAHASKA, IOWA
From 29-JAN-19 21:00:00 to 31-JAN-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in MONROE, IOWA
From 29-JAN-19 21:00:00 to 31-JAN-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in WAPELLO, IOWA
From 29-JAN-19 21:00:00 to 31-JAN-19 00:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in WINNEBAGO, IOWA
From 29-JAN-19 06:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in HANCOCK, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in WORTH, IOWA
From 29-JAN-19 06:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in CERRO GORDO, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Extreme Cold/Wind Chill in POCAHONTAS, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in HUMBOLDT, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in WRIGHT, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in FRANKLIN, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in BUTLER, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Extreme Cold/Wind Chill in BREMER, IOWA
From 29-JAN-19 09:00:00 to 31-JAN-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

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

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