Montreal is in the midst of an equipment shortage that is playing a major role in its ability to clear snow and fill potholes, Mayor Soraya Martinez Ferrada acknowledged this week.

In Ontario, very heavy snow has been falling across the GTA Sunday afternoon, with Toronto under 1km visibility for the last several hours. The cold and snow across Ontario and into the US has resulted in the cancelation of thousands of flights. Call ahead to Trudeau Airport if you are travelling today.

Roughly 3,000 households and businesses in Montreal are entering a third day without power as cold temperatures continue and the city remains under a yellow snowfall warning. Some schools have announced weather-related closures.

You'll be putting that shovel to good use.

A major winter system has been rolling through the region, bringing heavy snow, blustery conditions and bitterly cold temperatures to start the week. Environment and Climate Change Canada (ECCC) said total snowfall amounts of 15 to 20 centimetres were expected,

The record-breaking winter storm that pounded Ontario and Quebec with snow on Sunday night and Monday morning is moving east into Atlantic Canada, and bringing extreme cold with it.

With temperatures staying well below –5°C, the snow will be dry and powdery. Gusts reaching up to 70 km per hour by late day could cause blowing snow and sharply reduced visibility at times, with fresh snow drifting onto recently plowed roads.

A sneaky system is poised to bring Montreal one of its snowiest storms we’ve seen so far this season. Expect the snow to begin late Saturday night and continue into Sunday morning, with exceptionally heavy snowfall rates at the storm’s peak intensity.

In anticipation of severe weather overnight Sunday into Monday, airlines are advising travellers to check with their carrier or with the Aéroports de Montréal website.

Treacherous driving conditions are expected, as blowing and drifting snow create hazardous travel conditions. First we were one of the coldest places in the world this weekend. Now, a major winter storm could dump up to 20 cm of snow on Montreal.