* WHAT…Very cold wind chills as low as 25 to 30 below.
* WHERE…In Iowa, Fremont, Mills, Montgomery, and Page Counties. In
Nebraska, Boone, Cass, Lancaster, and Seward Counties.
* WHEN…Until noon CST Tuesday.
* IMPACTS…The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
Wind chill values can lead to hypothermia with prolonged exposure.