LIVE: Sub-zero wind chills behind Arctic front

AUSTIN (KXAN) -- Cold weather preparations need to be finished by the end of the day today as a strong Arctic cold front begins knocking on our door tomorrow morning.Today will feature mainly cloudy and dry skies with afternoon highs in the mid-50s. Another chilly night will follow with overnight lows down to the low 40s... but the bottom falls out of the thermometer beginning tomorrow morning. Tips on how to prepare for the Arctic freeze later this weekArctic freeze : timing and impactsThe Arct