BOONE, Iowa—It’s not unexpected. The National Weather has issued a Wind Chill Advisory, including Boone County, tonight from 9:00 p.m. until Noon Friday.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
200 PM CST Thu Jan 20 2022

...Bitterly Cold Temperatures Again Tonight into Friday Morning...

...WIND CHILL ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON
CST FRIDAY...

* WHAT...Very cold wind chills expected. Wind chills of 20 below
  to 35 below zero.

* WHERE...Much central and north central Iowa.

* WHEN...From 9 PM this evening to noon CST Friday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
  on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.