Much of southern Ontario is under a special weather statement as a winter storm that could cause widespread power outages.
A prolonged freezing rain event may lead to significant ice build up in some areas.
In Norfolk, freezing rain and snow are in the forecast.
Environment Canada says that there remains some uncertainty for the exact location and timing of the freezing rain axis, as well as the amount of ice accretion that may occur.
Freezing rain warnings are expected to be issued as the event draws nearer.