Foggy start to November may impede travelling in southern Ontario

Foggy start to November may impede travelling in southern Ontario

With the temperatures cooling through the overnight period this week in southern Ontario, combined with the relatively warm lakes, a lot of fog has developed in communities in close proximity to the lakeshores.

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This type of fog is known as radiation fog.

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image - 2022-10-31T054755.235

Advisories are in effect for a good portion of southern Ontario, with another foggy start expected for Tuesday and beyond.

"If travelling, be prepared for areas of near-zero visibility. If visibility is reduced while driving, slow down, watch for tail lights ahead and be prepared to stop," Environment and Climate Change Canada (ECCC) said in the advisory.

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Dense fog developed across the region through parts of Sunday, as well.

"As a moist and mild air mass migrates north into southern Ontario into Tuesday morning, more widespread fog is likely to develop once again," says Kelly Sonnenburg, a meteorologist at The Weather Network. "This time, fog may not be just confined to the lakeshores, but more widespread and patchy in southern Ontario. This type of fog is known as advection fog."

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image - 2022-10-31T055550.453

The foggy mornings will continue in parts of southern Ontario for several days this week, as a milder air mass and a lack of weather systems stick around for the first week of November.