It’s time to bring out the shovels because a messy winter storm is about to swiftly dump heaps of snow onto parts of Quebec to end the week.
A low pressure system is developing south of the border and will make its way toward Ontario and Quebec Wednesday night as another, weaker low pressure system moves from northwestern Ontario, through northeastern Ontario, to southern Quebec. The systems will eventually merge as they move into Quebec, leaving behind a messy trail of snow.
Earlier forecasts for this system were unsure of how much snow would fall over the province. Now, there is high confidence that a large portion of the province will get a dump of heavy snow, while some southern portions of the province sit in a swath of persistent rain.
The forecast for Montreal, however, remains tricky as the city sits in the middle of where the rain transitions to snow. Additionally, temperatures in Montreal are expected to hover around 0°C, creating a wide range of possible snow amounts in the metropolitan area.
Southern portions of the city will likely be sitting in an area of slightly warmer temperatures, resulting in wet, heavy snow for the area. The northern portions of the city will likely be sitting in an area of colder temperatures, resulting in a greater accumulation of snow.
Rain will be localized to areas south of Montreal, with uncertainty if any rain will fall in the metropolitan area itself. If rain does fall, the city could see upwards of 10 mm on Thursday afternoon. Otherwise, the southern half of the Eastern Townships will see 10-25 mm of rain while the northern half will see 5-15 mm on Thursday.
Southern Montreal, including areas south of city limits, could see between 10-20 cm of snow. Whereas the northern half of the city could see between 25-35 cm of snow accumulate, with the possibility of mixed precipitation falling over the whole city Friday morning.
The Eastern Townships can rejoice as they will be getting away with only 5-10 cm of snow over this time.
Trois-Rivieres will be getting a wallop with 30-40 cm of snow, while the eastern portions of the Gaspesie can expect to see between 20-35 cm.
Quebec City and the western portions of the Gaspesie will bear the brunt of the snow assault, however, with amounts of 30-40+ cm in the forecast by Saturday.
Over on the Ontario border, Gatineau will get a dump of 20-30 cm of snow.
Environment and Climate Change Canada (ECCC) has issued special weather statements for regions across southern Quebec. “Expect hazardous driving conditions due to visibilities that could rapidly go from good to nil,” ECCC advises in the statements.
The heaviest snow will fall overnight Thursday and into Friday, before shifting to light to moderate snow Friday afternoon and ending late Friday night.
Keep checking back to The Weather Network for more forecast information and updates.