Fog advisories issued in central, southern Alberta while north braces for cold

People in parts of southern and central Alberta, including the City of Calgary, are being advised Tuesday they should expect foggy conditions until late Wednesday morning.

Environment Canada issued several fog advisories on Tuesday afternoon, saying “an area of fog has developed across parts of southern and central Alberta.”

“Overnight, this fog is expected to thicken, giving very low visibilities,” the weather agency said on its website.

“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.”

Fog advisories are issued by Environment Canada when near-zero visibility is expected because of fog.

Watch below: Some Global News videos to do with fog.

Meanwhile, in parts of northern Alberta, including Wood Buffalo, people were being told to prepare for very frigid temperatures. An extreme cold warning was issued for that part of the province on Tuesday afternoon.

“An Arctic ridge, combined with clearing skies, will produce windchill values near -40 tonight,” Environment Canada said. “Windchill values between -40 and -45 can be expected in the overnight and morning hours Thursday and Friday.

“As the ridge moves into Alberta Wednesday night the warning may need to be expanded.”

People in areas under an extreme cold warning are advised to keep emergency supplies, including extra blankets and jumper cables, in their vehicles.

For a complete list of weather warnings, watches and advisories in Alberta, click here.

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