Snow, ice, and rain: Boxing Day mess in Ontario may lead to travel disruptions

A weather system is expected to affect Ontario on Boxing Day, potentially disrupting travel plans. While the exact storm track and impacts remain uncertain, parts of the region could see 5-15 cm of snow, while others may face significant freezing rain, ice pellets, or a mix of precipitation types.

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The storm’s track will determine the division between snowfall and icy conditions. Southwestern Ontario is likely to experience primarily rain or mixed precipitation.

Stay tuned for updates as the forecast evolves, and be sure to monitor any weather warnings in your area.

Impactful winter storm to hit Great Lakes region on Boxing Day Friday

A moisture-packed storm will move into the Great Lakes on Friday, bringing a mix of snow and icy precipitation to Ontario.

Northern Ontario is expected to see an all-snow event starting Friday morning, spreading into eastern Ontario by the afternoon and evening, with 5-15 cm possible. In southern Ontario, an icy setup is forecast as mild, moist air from the low-pressure system clashes with dense, cold air near the surface.

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Precipitation type will depend on the thickness of the warm air layer and proximity to warm or cold air.

In Windsor, all rain is likely. For areas such as London and Hamilton, freezing rain is possible, with 5-10 mm expected in south-central Ontario.

Toronto and Niagara may begin with snow Friday afternoon before transitioning to ice pellets in the evening and freezing drizzle by Saturday morning.

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Brace for possible power outages and travel delays

Potential impacts include isolated power outages, travel slowdowns, and delays.

Although there is good confidence in the all-snow event for northern and eastern Ontario, uncertainty remains regarding exact precipitation types and impacted locations in the south. A shift of just 0.5°C could significantly alter outcomes.

Monitor updates and plan accordingly.

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Be sure to check back for the latest weather updates across Ontario