Tue. Dec 9th, 2025

Winter Storm Warning: Southern Ontario Braces for Up to 15 cm of Snow

A significant snowstorm is set to sweep across southern Ontario today, impacting the Greater Toronto Area and surrounding regions with heavy snowfall, reduced visibility, and hazardous travel conditions.

Environment and Climate Change Canada has issued a winter weather travel advisory, warning residents to brace for challenging weather throughout Monday.

Hazards:

  • Snowfall: Accumulations of 5 to 15 cm expected.
  • Visibility: Significantly reduced during periods of heavier snow.
  • Travel Conditions: Snow-covered and icy roads expected to create hazardous driving conditions.

Timing:

  • Start: Monday morning.
  • Peak: Intense snowfall expected during the afternoon and evening.
  • End: Late tonight, transitioning to flurries with a risk of freezing drizzle overnight.

The storm will bring an initial wave of light to moderate snow in the morning, with a brief pause in the afternoon. A second, more intense system is expected to follow, resulting in total snow accumulations of up to 15 cm by nightfall.

Travel Advisory:
Motorists are urged to plan ahead and exercise extreme caution on the roads. Sudden weather changes may lead to treacherous conditions, with snow-covered highways, slippery walkways, and reduced visibility.

Affected Areas:

  • City of Toronto
  • Mississauga
  • Brampton
  • Halton Region
  • Durham Region
  • Hamilton
  • Niagara Region

Residents in these regions should remain vigilant, avoid unnecessary travel, and prepare for potential delays and disruptions. Stay informed by monitoring local weather updates and taking precautions to stay safe during this winter storm.

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