Here is the long played out scenario: First of all the Houston snowstorm will move off the middle Atlantic coast today and hit the Maratimes tonight. The Calgary storm that produced visibilities of less than 1km for over 10 hours will slide just south of Montreal on Monday and produce a general 1-3cm snowfall in our region. Cold air will then pour into the region behind that storm while low pressure begins to organize in the US southwest.
The southwestern storm will then move across the Midwest and to near the lower Great Lakes on Wednesday. This storm will have good atmospheric support, a strong wind field and plenty of moisture as it passes just south of Montreal mid week. Combine that with the newly arrived cold air mass, and we are looking at our first snowstorm potential for Wednesday and Thursday. It is early yet, but successive computer model runs are pointing to s significant winter storm for Ontario and Quebec. Stay tuned folks!