1st significant snowfall of the season happening Wednesday

Wednesday morning's snowy commute in eastern Ontarioprompted Environment Canada to issue its first local winter weather travel advisory of the season.

"This is the first significant snowfall of the season," said Environment Canada's advisories covering Gatineau, Que., and all of eastern Ontario except for the Deep River area.

Advisories startedliftingaround 10:45 a.m., with Ottawa's ending about an hour later.

The snow startedfalling in Ottawa around midnightin Ottawa and Gatineau. It's expected to be heaviest before 9 a m. and end early in the afternoon.Wednesday'sforecasted high for Ottawa is 1 C.

Some school buses have been cancelled in Frontenac, Hastings, Lenox and Addingtonand Renfrew counties.

Much of southern Ontario is being affected by thelow-pressure system, which is making its way over the lower Great Lakes Tuesday night into Wednesday.

Snowfall warnings were in place further east in Quebec.

There's a chance of flurries for the rest of the week in Ottawa and temperatures a few degrees below the seasonal average.