Arctic high pressure that surged south across eastern Nebraska and western Iowa Tuesday evening February 19th, brought dangerously cold wind chill values to the region Wednesday morning February 20th.  Actual temperatures dropped to 5 below to 15 below zero with the coldest across northeast Nebraska and west central Iowa.  Sustained north winds of 12 to 20 mph (higher gusts were also observed) produced wind chill values that dropped into the 20 below to 30 below range over much of the region, with some values as cold as 35 below from Cedar and Wayne counties in northeast Nebraska southeast into Monona and Harrison counties of west central Iowa.
The extreme cold wind chills caused the cancellation of some schools across the region.

Cold/Wind Chill in CASS, NEBRASKA
From 20-FEB-08 06:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in OTOE, NEBRASKA
From 20-FEB-08 07:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in NEMAHA, NEBRASKA
From 20-FEB-08 08:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Extreme Cold/Wind Chill in WAYNE, NEBRASKA
From 20-FEB-08 01:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Extreme Cold/Wind Chill in THURSTON, NEBRASKA
From 20-FEB-08 02:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Extreme Cold/Wind Chill in CEDAR, NEBRASKA
From 20-FEB-08 00:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Extreme Cold/Wind Chill in BURT, NEBRASKA
From 20-FEB-08 02:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in SAUNDERS, NEBRASKA
From 20-FEB-08 05:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in SARPY, NEBRASKA
From 20-FEB-08 05:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in SEWARD, NEBRASKA
From 20-FEB-08 06:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in LANCASTER, NEBRASKA
From 20-FEB-08 06:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in DODGE, NEBRASKA
From 20-FEB-08 04:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in WASHINGTON, NEBRASKA
From 20-FEB-08 04:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in DOUGLAS, NEBRASKA
From 20-FEB-08 04:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in BUTLER, NEBRASKA
From 20-FEB-08 05:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in ANTELOPE, NEBRASKA
From 20-FEB-08 02:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in PLATTE, NEBRASKA
From 20-FEB-08 03:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in STANTON, NEBRASKA
From 20-FEB-08 01:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in CUMING, NEBRASKA
From 20-FEB-08 02:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in COLFAX, NEBRASKA
From 20-FEB-08 04:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in KNOX, NEBRASKA
From 20-FEB-08 00:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in PIERCE, NEBRASKA
From 20-FEB-08 01:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in MADISON, NEBRASKA
From 20-FEB-08 01:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Cold/Wind Chill in BOONE, NEBRASKA
From 20-FEB-08 05:00:00 to 20-FEB-08 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations