Winter Storm Warning posted for Montreal and southern Quebec

A winter storm watch has been posted for southern Ontario and Quebec.

Winter Storm Warning posted for southern Quebec and eastern Ontario. The watch has been upgraded to a warning as of 3:45PM.

Here is the latest information on the upcoming winter storm. Strong low pressure developing over the southern plains is forecast to move towards the Great Lakes and then just south of Montreal on Wednesday. A second area of low pressure will move along the east coast. The combination of these two storm will produce a wide area of precipitation across our entire region. The snow is expected to spread across southern Ontario early Tuesday morning, reaching southwestern Quebec late in the day. The snow will become heavy at times overnight and through Wednesday morning in metro Montreal. Accumulations will range from 15 to 25cm across southern Ontario and new England, with 25 to 40cm in the St. Lawrence Valley from Cornwall to Quebec City.

In Montreal, we should receive close to 30cm of snow from about 4pm Tuesday through noon on Wednesday. The snow will be accompanied by strong, gusty winds which will produce widespread blowing snow. Expect very poor road conditions across the region, and consider postponing any unnecessary travel. The snow should taper off to flurries by Wednesday afternoon.