A snowfall warning is in effect for much of southern Ontario.

According to Environment Canada, total snowfall accumulations of 15 to 20 cm are possible overnight Thursday (Feb. 17) into the morning.

“Rain is expected to transition to snow late this afternoon or early this evening and intensify throughout the evening. Freezing rain and ice pellets are also possible late this afternoon or early this evening during the transition,” the warning reads.

Motorists should expect near zero visibility at times in heavy snow and blowing snow, mainly tonight, as well as icy and slippery surfaces.

“Be prepared to adjust your driving with changing road conditions. Rapidly accumulating snow could make travel difficult over some locations,” the warning reads.

“Visibility may be suddenly reduced at times in heavy snow. Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow.”