Wind chill advisories in effect starting 9PM this evening (and remain in effect in the western mountains and portions of the Virginia Blue Ridge). Map shows wind chills at midnight this New Year’s Eve. Wind chills drop below zero everywhere overnight. #MDwx #VAwx #DCwx #WVwx pic.twitter.com/IOnWTD1J9M
— NWS DC/Baltimore (@NWS_BaltWash) December 31, 2017