UPDATE: The fog advisory ended Tuesday morning.
We're in for a foggy night.
Environment Canada has issued a fog advisory for Ottawa, Gatineau, and the rest of eastern Ontario.
The advisory says fog is expected to develop overnight Monday into Tuesday in many parts of eastern and southern Ontario, which could reduce visibility to near-zero levels on some roads.
You can view Environment Canada weather alerts for our region by clicking here.
Thanksgiving long weekend is typically a busy travel weekend, so there may be increased volume, even late at night or early in the morning.
Environment Canada says the fog is expected to dissipate Tuesday morning after sunrise.
Tuesday's sunrise in Ottawa is expected at 7:12 a.m.