Storm Warning is in effect for southern Quebec and eastern Ontario. Winter weather advisory posted for adjacent areas of upstate New York.

Another winter storm is expected to hit Toronto and its surrounding areas mid-week that could bring more than 15 centimetres of snow, Environment Canada says.

A huge winter storm is expected to descend on parts of Ontario and Quebec tonight and quickly spread across the Atlantic region on Thursday and Friday, prompting Environment Canada to issue a flurry of weather warnings.

Environment Canada updated its weekly forecast for Quebec on Tuesday, and Montreal has been hit with a weather advisory. A powerful snowstorm is set to hit the city starting late Wednesday, bringing between 20 and 35 cm of snow — much more than the 15 cm originally forecast just a day earlier.