It just keeps coming.

Toronto is going to have more snow fall on its streets within hours, perhaps up to 10 centimetres when all is said and done.

The CBC’s Claire Martin said the system that will hit Toronto has already reached the southwest corner of the province by early Monday evening.

The snow will begin to pile up in Toronto closer to midnight, she said.

"We’re looking at a snowy overnight period," she said.

Martin said the snow will be wet and heavy at times, and it is going to likely make for a messy commute on Tuesday.

"Tomorrow morning, if you’re coming in from the east, you’ll still be in the snow. If you’re coming in from the west, it will be on the ground," she said.

The City of Toronto has some 200 trucks on standby, ready to respond to what Mother Nature is about to deliver.

But police and city officials are reminding drivers to leave extra time to get where they need to go on Tuesday.

With files from The Canadian Press and the CBC's Natalie Kalata and Claire Martin