Winter storm watches and warnings, as well as snowfall and blizzard warnings have been issued by Environment Canada across three provinces as a winter storm makes its way across parts of eastern Canada.

Snowfall amounts of anywhere between 10 and 30 cm — depending on location — are expected across the provinces.

Much of Ontario and Quebec has experienced warmer-than-normal temperatures and few snowstorms, however, this could be the worst storm of the season.

On top of the snowfall, strong winds are expected which will make driving dangerous. Environment Canada has asked that people consider "postponing non-essential travel until conditions improve."

In Toronto, commuters who might have opted to take transit rather than take the car to work in the face of an impending snowstorm, were confronted with a TTC outage along part of the subway line. Downtown streetcars were also unavailable.

READ MORE: Environment Canada issues blizzard warning for Montreal

The storm is expected to worsen throughout Tuesday night and Wednesday morning as it moves northeast across Ontario. It will move into Quebec and New Brunswick on Wednesday.