Toronto and portions of Ontario were under a wind warning for much of Saturday, as fierce gusts tore down trees and snarled transportation corridors around the city.

Power lines were also downed, leaving thousands without power.

Late Saturday afternoon, a fallen tree on the Don Valley Parkway slowed traffic south of Eglinton Avenue. It was later cleared.

Meanwhile, a section of the TTC's Bloor line had to be shutdown after debris was scattered across the tracks between Kipling and Islington stations.

Shuttle buses were used as crews attempted to clean away the tracks. By around 4:30 p.m., the debris was cleared and service resumed.

However, another snag occurred between the Ossington and Jane stations and shuttle busses had to be used. It was believed that a fallen tree was also to blame for the second interruption.

In parks and neighbourhoods around the city, large tree branches were tossed around after an "unseasonably strong" low pressure zone moved into the area.

Environment Canada said that gusts reached 100 kilometres per hour near the northern shores of Lake Erie. Winds slowed down toward the evening hours.

Windsor and Sarnia, along with the Toronto area, had gusts of up to 80 km/h throughout the day. By the evening, gusts clocked in at around 60 km/h.

"The winds will be strong enough to cause minor damage to property and some trees," Environment Canada warned on its website Saturday.

"Motorists should also be prepared for the very strong and gusty winds which may make driving quite difficult."