Fog advisory in effect for GTA and southern Ontario

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Drivers are being warned of near-zero visibility on roads this morning as the GTA and much of southern Ontario sits under a fog advisory.

“Persistent fog with visibility close to zero is forming in some areas and will continue through the early morning hours,” Environment Canada warned in its advisory early Thursday.

The fog is expected to disappear quickly during the morning. However, people are being advised that “travel is expected to be hazardous due to reduced visibility in some locations” until that happens.

The advisory applies to the Greater Toronto Area and a wide swath of southern Ontario, roughly from the London area in the west to Kingston in the east.

Toronto Pearson International Airport warned that the foggy weather is causing some delays for arriving passengers.

“To maintain safe operations, the flow of arrivals has been reduced by NAV Canada due to fog affecting the region,” the airport said in a tweet. “The airport continues to operate, but inbound flights may be delayed.”

Pearson advises passengers to check their flight time and status with their airline before heading to the airport.

As the fog lifts, a mix of sunny clouds is expected in Toronto for most of the day with a high of 8C.

Periods of rain or drizzle are expected to begin after midnight with a low of 5C overnight.

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