* WHAT…Very cold wind chill values as low as 20 to 30 below zero
expected.
* WHERE…Much of central and northern Iowa.
* WHEN…From 3 AM to noon CST Sunday.
* IMPACTS…The dangerously cold wind chills could cause frostbite
on exposed skin in under 30 minutes.
* ADDITIONAL DETAILS…Wind chill values could fall to similar
levels again Monday morning and Tuesday morning.