‘Near zero visibility’ possible as fog descends on Metro Vancouver

A fog advisory remains in effect through Thursday morning in Metro Vancouver.

A fog advisory is in effect for Metro Vancouver and forecasters are warning of the possibility of sudden spells of “near-zero visibility” until it dissipates Thursday morning.

Environment and Climate Change Canada’s advisory said a ridge of high pressure in the region will cause “patchy fog” throughout the day Wednesday.

“Cool, humid marine air is trapped under a warm, stagnant airmass aloft,” the weather agency’s advisory said.

“Tonight, the fog will become more widespread as temperatures drop.”

Drivers and travellers are being urged to exercise caution and prepare for the potential that conditions could change suddenly, leading to dramatically reduced visibility.

“Travel will likely be hazardous in some locations,” the advisory said.

The fog is expected to lift Thursday morning when temperatures rise, according to ECCC.