This includes the communities of Boston, Worcester, Springfield, Lowell, Fitchburg , Brockton, Taunton, Hartford and Woonsocket. Frigid temperatures tonight combined with northwest winds will yield dangerous wind chills of minus 15 to minus 20.If venturing outside tonight, make sure to dress in several warm dry layers. It is very important to keep your head, hands, and feet covered to avoid frostbite. With these wind chill values, frostbite may occur in 20 to 30 minutes on exposed skin.
A wind chill advisory is issued when prolonged cold temperatures, combined with sustained winds, are expected to produce bitter cold wind chill values of -15 to -24 degrees, for at least 3 hours.