* WHAT...Very low wind chills as low as 5 degrees each night and remaining near or below freezing during the day.

* WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, north central, northeast, northwest, south central, southeast, southwest, and west central Mississippi.

* WHEN...Until Thursday morning.

* IMPACTS...Cold conditions and very low wind chills can lead to hypothermia with prolonged exposure.