A large and powerful area of low pressure will push across Ontario and Quebec beginning this evening in Ontario and will continue through Friday. Quebec will see impacts from the storm as early as Friday and will linger through Saturday.
Significant amounts of snow are possible on Thursday and Friday. Up to 20 centimetres of snow combined with strong winds are possible.
On Friday, snow squalls are possible near eastern Lake Superior.
On Thursday both snow and rain are possible. Then on Friday heavy snow will combine with strong winds giving reduced visibility and blowing snow. The highest snowfall amounts are expected near James Bay.
Mostly a rain event is expected beginning tonight. In the National Capital area, 15 to 25 mm of rain is expected, with lesser amounts on other areas.
On Friday, there may be some snow squall activity near Lake Huron and Georgian Bay.
Snow will begin late Friday and persist into Saturday with strong winds. Snowfall amounts of 15 to 25 cm are possible. Areas in the Eastern Townships may see rain with 15 to 25 millimetres expected. Freezing rain is possible in the Lachute area.