Freezing rain is forecast to last several hours today in Montreal, with 20-30mm expected. Amounts over 15mm usually start to impact power lines and trees. Expect travel delays as well.
Freezing Rain Warning in effect for Montréal, the St. Lawrence Valley and Ottawa Valley.
A wide area of freezing rain is expanding over eastern Ontario early Wednesday, expected to arrive in Montreal during the morning hours.
Most schools are closed and municipalities and Hydro-Quebec have mobilized ahead of an expected ice storm Wednesday. Low pressure will move from Illinois into upstate New York later today. Precipitation has been slow to arrive in Montreal, with scattered freezing drizzle being observed. The heavier precipitation arrives mid-morning, with 20-30mm of freezing rain expected by evening.
Temperatures have fallen below freezing in Montreal, currently -1C (30F), and will remain there all day. Warmer air will briefly arrive this evening, before cooling once again on Thursday.
Gusty northeast winds of 30-50km/h will back to the west and southwest tonight and increase 50-80 km/h, which will not help the power situation.
This is a dynamic system, with very warm air just to the south of us, and cold arctic high pressure to the northeast. Montreal is on the dividing line between the two airmasses. The trailing cold front has been responsible for widespread thunderstorms and tornadoes across parts of the central Untied States.
Some thunder may even sneak into parts of Ontario and extreme southern Quebec later today.
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