The twin twisters obliterated about dozens of homes, tossing vehicles around, snapping huge trees and injuring several people, at least two of whom were admitted to hospital in critical condition.
One of the tornadoes also moved on from Ottawa and passed through Gatineau, Quebec. About 11,000 residents in the area were without power Friday because of the storm. Hydro Ottawa CEO Bryce Conrad compared the magnitude of the damage to the power grid to the debilitating ice storm of 1998.
"If they can, please stay home".
In areas lashed by the tornado, scenes of the havoc were everywhere.
The tornado hit on Friday evening, demolishing homes in the town of Dunrobin to the north west of the city before crossing over to the town of Gatineau, which lies directly to the north of Ottawa in the province of Quebec. City officials, including the police chief, urged people to work at home or take the day off. In Dunrobin, authorities said many buildings that had emerged from the tornado partially intact would likely have to be torn down.
Around 8,100 Hydro-Québec customers in the Outaouais are still in the dark and a few thousand Hydro One customers in the Ottawa region are also still without power.
Residents Brian Lowden, left, and Alex Carlson look at the damage to their duplex caused by a tornado in Dunrobin, Ont., west of Ottawa, on Sunday, Sept. 23, 2018. The storm took away about 400 megawatts from the supply.
Tregunna said she had plenty of help in her Good Samaritan efforts with "tons of volunteers, lots of donation offers, lots of offers to do delivery".
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A spokesman for the inspector general did not immediately return a message seeking comment Friday. Justice Department that doing so could harm the investigation.
Meanwhile, the Greater Toronto Area saw wind gusts of up to 80 kilometres per hour, he said.
Ontario Premier Doug Ford said he would be visiting the Ottawa area on Sunday.
"We're putting the resources in, we are going to get it done", he told a woman seeking refuge at the school.
"We have all available crews out in the field", the utility company said.
Prime Minister Justin Trudeau said the federal government is prepared to assist those whose lives have been turned on end.
"We're with you", Trudeau tweeted. Coalition Avenir Quebec Leader Francois Legault and Manon Masse, a co-spokesperson for Quebec solidaire, were scheduled to arrive in the area later Saturday.
Neighbours with electricity have stepped in to help feed and shelter those without. More than 3,000 people were fed hot meals on Saturday at a community centre in the suburb or Barrhaven.
The Ontario government announced Saturday that it was activating the province's Disaster Recovery Assistance program in affected areas.