Environment Canada has issued a fog advisory for most of the southern Interior Friday, Jan. 21.
The advisory covers the Shuswap, Okanagan, Similkameen, Boundary, Arrow Lakes-Slocan Lake, Kootenay Lake, East Kootenay, Elk Valley and West Columbia regions.
The weather agency says reduced visibility is to be expected.
Areas of fog and low clouds will develop tonight as a ridge of high pressure builds in from offshore. Patchy fog and low cloud will temporarily lift around noon on Saturday and then return Saturday evening and into Sunday morning.
Visibility may be suddenly reduced to near zero, the agency warns.