* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 10 below. For the second Cold Weather Advisory, very cold wind chills as low as 10 below expected.

* WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia.

* WHEN...For the first Cold Weather Advisory, until 1 PM EST Tuesday. For the second Cold Weather Advisory, from 10 PM Tuesday to 10 AM EST Thursday.

* IMPACTS...The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. Wind chill values can lead to hypothermia with prolonged exposure. Very cold temperatures can lead to hypothermia with prolonged exposure.