Environment Canada is warning of strong wind gusts for much of southern Ontario on Wednesday.
The agency issued a special weather statement stretching from the Windsor area all the way up past the North Bay area.
It said gusts of 70 to 90 km/h are expected, with even stronger winds and showers or thunderstorms possible.
The winds are expected to develop ahead of a cold front Wednesday afternoon before easing into the evening or overnight hours.
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Some regions, including the Bruce Peninsula, Owen Sound, and Goderich areas, are under a wind warning, with gusts of 90 km/h or more possible there.
Loose objects could be tossed and power outages are possible as a result of fallen tree branches, Environment Canada said.