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Thousands without power after Ontario thunderstorms, high winds

TORONTO — A powerful storm Tuesday evening toppled trees and power lines in Ontario, where thousands remained without power Wednesday morning. A Hydro One outage update indicated more than 55,000 customers were without power.
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A powerful storm toppled trees and power lines in Ontario where thousands remain without power. Signage for the Hydro One Networks Inc. corporate office is shown in Toronto on Thursday Nov. 14, 2024. THE CANADIAN PRESS/Doug Ives

TORONTO — A powerful storm Tuesday evening toppled trees and power lines in Ontario, where thousands remained without power Wednesday morning.

A Hydro One outage update indicated more than 55,000 customers were without power.

The provincial utility said damaged trees on power lines and broken poles were part of the damage crews were assessing. Environment Canada had warned of damaging winds, large hail and heavy rains ahead of the severe thunderstorm.

Local utilities were reporting that about 500 customers were still without power in Toronto and around 350 in Ottawa, but the numbers were coming down Wednesday.

The storm also toppled some trees and hydro poles in Hamilton on Tuesday afternoon, where the city's mayor sustained multiple injuries in a fall "during extremely windy conditions," her office said.

Mayor Andrea Horwath fell on the stairs outside city hall and was undergoing surgery for a broken wrist on Wednesday morning, according to a post on her X account.

Horwath was also being assessed for other injuries, including an elbow fracture and a leg injury, the post said.

Tuesday's storm arrived about a month after a severe ice storm caused sweeping damage in Ontario and parts of Quebec. Thousands of people in Ontario, especially in cottage country, experienced prolonged power outages as a result.

Initial estimates show the ice storm caused $342 million in insured damage, the Insurance Bureau of Canada said in a news release Wednesday.

This report by The Canadian Press was first published April 30, 2025.

The Canadian Press

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