From AccuWeather.com

Winter Storm Warning...

The much talked about winter storm is almost upon us. Snow and freezing rain has moved into extreme southern Ontario near Windsor and will rapidly spread north and east overnight. A swath of 10-15cm of snow with gusty northeast winds will occur from Detroit to Ottawa. South of that line and especially in the St. Lawrence Valley of Ontario and NY freezing rain will mix in with the snow for several hours. There is the potential of 15mm or more of ice in these region leading to significant ice build up on trees and power lines. To put things in perspective - close to 100mm fell during the 1998 Ice Storm. This is no where as bad but still a significant storm nonetheless. All precipitation should taper by late tomorrow. In Montreal expect all snow with 15-30cm forecast. Travel will be extremely difficult along all area highways beginning tonight into late tomorrow.