Extreme cold is expected in many parts of the country from the Prairies to the Maritimes, with heavy snow also forecast for Quebec and Atlantic Canada.

Parts of the Greater Toronto Area are under a heavy snowfall warning, with 10 centimetres expected to accumulate by late Wednesday afternoon, according to Environment Canada.

Environment Canada issued a yellow snowfall warning for the City of Toronto, from Wednesday evening.The agency says, the city could receive up to 20 centimetres of snow starting Wednesday night

Environment Canada is warning residents across eastern Ontario, including Kingston and area, to prepare for periods of heavy snow and bitter cold as an

Heavy snowfall could be seen in Nova Scotia, Prince Edward Island and Newfoundland as a Nor'easter blows in, while Ontario could also see more snow Sunday into Monday.

From extremely cold temperatures to winter snowstorm that could drop up to 30 centimetres of snow, here's what you need to know about this frigid weekend in the GTA.

Winter weather is gripping a large part of the northern U.S. and Canada, as snow and ice create slick roads, poor visibility and dangerous driving conditions. Vehicles slid off highways, schools closed for safety and some cities looked shaken like a snow globe,