More than 300 collisions reported across GTA as November snowfall blankets southern Ontario

Toronto’s first widespread snowfall of the season created treacherous conditions across southern Ontario over the weekend, and Ontario Provincial Police (OPP) now confirm there were approximately 340 collisions in the Greater Toronto Area (GTA) in the past 24 hours.

Toronto received between five and 10 centimetres by Monday morning, while Ottawa was forecast to see 10 to 20 centimetres.

Flurries continued to fall in Toronto and across parts of the GTA on Monday morning, leading to additional snowfall totals for the morning commute.

Other parts of the province, including Barrie, London, Goderich, and Sarnia, were under snow squall warnings, with snowfall totals ranging from 15 to 30 cm through Tuesday morning.

“Colder northerly winds will result in the development of lake effect snow off Georgian Bay Monday, with the intensity expected to increase later in the day or [Monday] night,” Environment Canada said. “The majority of the activity is expected to affect areas south of Georgian Bay, but as winds become more northwesterly tonight, areas to its southeast, including the city of Barrie, may be affected.”

Residents in southern and central Quebec also experienced their first snowfall of the season, with Montreal expected to receive nearly 10 cm of snow through Monday. 

---

Environment Canada advised motorists to expect challenging driving conditions and be prepared to adjust their travel plans accordingly.

Most of the crashes were described as minor and preventable, OPP Sgt. Kerry Schmidt said.

“A very busy 24 hours,” Schmidt said.

Approximately 340 collisions across the #GTA in the past 24 hours. Most of the incidents were minor in nature but also very preventable.
Keep your hands on the wheel, eyes on the road and focus on driving, and always clear your vehicle of ice and snow before heading out.… pic.twitter.com/QajcOr6DEl

— OPP Highway Safety Division (@OPP_HSD) November 10, 2025

Toronto pre-treats roads ahead of first major snowfall of 2025

OPP urged motorists to keep their hands on the wheel, eyes on the road, and ensure vehicles are fully cleared of snow and ice before heading out.

The City of Toronto states that it applied salt brine to high-priority roads and bridges ahead of the snow, and that salters were strategically placed across the city to facilitate a faster response once the snow starts to stick to the ground.

The City said sidewalk plows would be out to clear away snow once it reached the 2 cm threshold. Crews began clearing TTC stops at 7 p.m. ahead of the Monday morning commute.

“Once we get into the evening and into the overnight, it begins to clear, and it becomes a temperature-based story,” said CityNews Meteorologist Chris Potter. “Temperatures on Monday will be around zero for the daytime high, feeling like minus-6.”

City officials opened two warming centers out of an abundance of caution due to the forecasted temperatures. They are located at 885 Scarborough Golf Club Road and 81 Elizabeth Street, behind City Hall.

Canada’s air navigation service provider, NAV Canada, posted on social media on Sunday that there were flight delays at Trudeau International Airport in Montreal and at Pearson International Airport in Toronto due to adverse weather conditions.

“Our team is moving aircraft safely, and as quickly as possible,” said NAV’s post.

The post for Pearson noted the delays were also due to “NAV Canada resources,” which the service provider blamed for delays in Toronto last weekend as well.

Files from The Canadian Press were used in this report