Sunday Snowfall: Two Possible Scenarios for Quebec

A potential snowfall event is expected in Quebec from Sunday to Monday, driven by a new low-pressure system. Meteorologists are considering two possible scenarios regarding the storm’s trajectory.

Snowfall Predictions for Quebec

The first scenario involves the storm tracking further south. This path would likely lead to substantial snow accumulation in the Saint-Laurent Valley, particularly in Montreal. The second option sees the storm moving north, which would shift the heaviest snowfall towards the Laurentians.

Timeline of the Snowfall

Weather forecasts indicate the arrival of snow in the Outaouais region on Sunday afternoon and evening. The precipitation will progress towards Montreal and the Laurentians, eventually reaching Quebec City and Saguenay–Lac-Saint-Jean early Monday morning. Road conditions may become difficult in certain areas.

Scenario 1: Montreal in the Forecast

• If the low-pressure center shifts south of the river, a snow band could stretch from Outaouais to Montreal.
• This would bring snow at near-freezing temperatures, with greater accumulation expected in the Saint-Laurent Valley.
• Areas further south, such as Estrie and Montérégie, may experience a mix of rain and snow, leading to more modest accumulations.

This scenario could result in the first significant snowfall of the season in both Montreal and Gatineau. Accumulations could reach several centimeters, varying by surface type. Snow is likely to stick on grass while melting quickly on roads. Higher elevations are expected to see thicker snow cover.

Scenario 2: Northern Trajectory

• Should the low-pressure system move further north, the heaviest snow would likely fall between the Laurentians, Mauricie, and Saguenay–Lac-Saint-Jean.
• The Saint-Laurent Valley would experience less snow, with more rain or melting snow forecasted.
• This outcome would lessen the snow impact on the metropolitan area while still posing risks for roads north of the river.

Expected Snowfall Accumulation

Based on these scenarios, Montreal could see between 5 to 15 centimeters of snow. Accompanying snowfall amounts may be higher in the northwest regions, particularly in the Laurentians, and lower in the southeast areas like Estrie and Montérégie. Currently, Scenario 1, which suggests more snowfall in Montreal, remains the most likely outcome.

Residents are advised to prepare for snowfall by accessing snow removal equipment and ensuring winter tires are installed if not already. Stay updated on weather conditions as this potential snowstorm approaches. Collaboration with meteorologist Nicolas Lessard is ongoing as the situation develops.

Be aware of possible accidents and road closures, particularly near Abitibi.