Toronto is under an orange snowfall warning as a winter system moves through southern Ontario, bringing heavy snow, reduced visibility and disruption to transport and school services across the city and surrounding regions.
The warning was issued as snow intensified during the morning, with conditions deteriorating quickly across parts of the Greater Toronto Area. Transport authorities and school boards began cancelling services early, citing safety concerns as snowfall accumulated faster than crews could clear major routes.
How much snow is expected — and when
Forecast guidance from Environment and Climate Change Canada (Weather) indicates significant snowfall over a short period, with the heaviest bands expected to pass through during the daytime and into the evening commute. When snow falls quickly rather than gradually, visibility can drop sharply and road conditions can change within minutes.
Weather warnings are updated frequently as systems evolve. For the latest warning maps and statements, consult Environment Canada’s warnings page.
School buses cancelled as boards respond to road conditions
School transportation was among the first services affected. Several boards across the GTA have reported bus cancellations tied to hazardous roads and reduced visibility, particularly in areas where snow cover built rapidly.
Parents are being urged to check official updates directly from their boards and transportation providers rather than relying on social media. Toronto-area updates are posted by the Toronto District School Board (TDSB), while neighbouring boards and consortia publish their own service alerts and cancellation notices throughout the day.
Major roads affected: DVP and Highway 401
Snow accumulation and blowing snow have led to difficult driving conditions on Toronto’s main arteries, including sections of the Don Valley Parkway (DVP) and Highway 401. Even where ploughs are operating, snowfall rates can outpace clearing on ramps, overpasses and secondary routes.
For live highway status, collisions and closures, Ontario’s official road conditions service is available via Ontario 511. Drivers are being advised to delay non-essential travel where possible, build in extra time, and expect reduced speeds during peak hours.
Impact on transit across the city
Toronto’s public transport network typically runs through winter storms, but snow-covered roads and congestion can trigger delays, detours and short turns on surface routes. Riders should check route-specific alerts and service updates from the Toronto Transit Commission (TTC), particularly during the afternoon and evening commute when conditions can worsen.
Why this warning matters
An orange snowfall warning signals conditions likely to cause disruption: road clearance can struggle to keep pace, school bus services may be suspended even when buildings remain open, and emergency response times can lengthen during periods of heavy snow and reduced visibility.
Officials also note that warnings can be escalated if snowfall intensity increases or freezing conditions persist into the overnight period. Residents are being encouraged to keep checking official advisories as the system moves through the region.
What residents are being advised to do
Authorities are urging residents to avoid non-essential travel during periods of heavier snowfall, to check school board and transit updates directly, and to drive only if vehicles are properly equipped for winter conditions.
A developing situation
Conditions across Toronto remain changeable, and further advisories may be issued if snowfall bands intensify or linger longer than expected. For the most reliable information, residents are being advised to follow updates from official weather, road and transit sources throughout the day.
