While Calgarians have been basking in warmer temperatures to start December after several weeks of frigid weather to close out November, the influx of warm weather also means the city and surrounding areas have been blanketed in some thick fog.
The fog was so thick Wednesday morning (Nov. 4, 2024) that it prompted Environment Canada to issue a fog advisory for Calgary and the surrounding area.
Global Calgary meteorologist Tiffany Lizee said the fog results when “moist air masses move in from the Pacific and that moisture is getting caught between cool, easterly winds and warm, westerly flow coming off the mountains.”
The advisory issued Wednesday warns of “dense fog with near zero visibility” and traffic cameras both in and outside the city show areas of thick fog.
Global Calgary traffic reporter Leslie Horton said motorists need to be careful and ensure headlights are kept on.
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“We have the melt from yesterday, then a little bit of a freeze and then the fog and its icy icy out there,” said Horton.
“Visibility has to be less than a kilometre for at least six hours for Environment and Climate Change Canada to issue a fog advisory,” said Lizee.
At noon on Wednesday, the visibility was down to less than 400 metres.
Asked how long the foggy skies will last, Lizee said, “It looks like its going to sit until the winds shift. It’s going to take a little bit of time for the southernly winds to move some of this fog out of the area.”
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