Environment Canada has issued a snow squall watch for Bracebridge, Gravenhurst, Port Carling and Port Severn. Lake effect flurries are building in a cold northwest flow over Lake Huron and Georgian Bay. Environment Canada says some areas of Muskoka could see between 5 and 10 cm of snow today. Drivers are reminded to slow down as poor visibility is likely at times. The squalls are expected to begin weakening later this morning.