A severe wind chill warning’s been issued for tonight for Orillia, Washago, Barrie, Huntsville, Baysville, Parry Sound, Rosseau, Killbear Park, Port Carling, Port Severn, Bracebridge and Gravenhurst. Arctic air associated with a bitterly cold ridge of high pressure continues to seep southwards across Southern and Eastern Ontario. This is expected to generate overnight lows ranging from minus 20 to minus 30. You are advised to dress warmly and cover any exposed skin as much as possible when heading outdoors.