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At least five people are dead after a severe thunderstorm swept through southern and eastern Ontario and parts of Quebec on Saturday, downing trees and power lines and leaving hundreds of thousands without power.

Vehicles are seen among downed power lines and utility poles after a major storm on Merivale Road in Ottawa on Saturday.Justin Tang/The Canadian Press

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Sisters Ayla, 8, and Sophia, 9, climb along the trunk of a tree that was uprooted by a major storm and now lies across a residential street in Ottawa on Saturday.Justin Tang/The Canadian Press

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A resident passes by a tree that was uprooted by a severe storm and fell into a home in her neighbourhood in Ottawa on Saturday.Justin Tang/The Canadian Press

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A utility worker documents the damage along the roadway after a major storm took down poles and power lines on Merivale Road in Ottawa, on Saturday.Justin Tang/The Canadian Press

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Residents take a look at a tree that was destroyed during a major storm in Ottawa on Saturday, May 21.Justin Tang/The Canadian Press

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Motorists remain in their vehicle as they wait for crews to make sure they can leaves safely, after power lines and utility poles came down onto the roadway during a major storm, on Merivale Road in Ottawa, on Saturday, May 21.Justin Tang/The Canadian Press

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Crews remove a tree that fell on a car following a major storm on Saturday, in Carleton Place, Ont.Sean Kilpatrick/The Canadian Press

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More than 35 power poles along the Highway 29 were severly damaged during a major storm on Saturday, May 21, in Mississippi Mills, Ont.Sean Kilpatrick/The Canadian Press

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Damage is visible after a powerful storm hit the Ottawa region.Spencer Colby/The Globe and Mail

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Damage is visible after a powerful storm hit the Ottawa region.Spencer Colby/The Globe and Mail

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Paroisse Saint-Hughes Church in Sarsfield, Ont., near Ottawa, on Sunday after sustaining severe damage from yesterday's storm.Spencer Colby/The Globe and Mail

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