Anthony Di Monte, general manager of the City of Ottawa's Emergency and Protective Service, said that more than 400 traffic lights continue to be out.
"We were freaked out by it all".
Officials warned people not to re-enter their homes until they had been deemed safe.
Finally, I want to thank my fellow caucus members Merrilee Fullerton, Lisa MacLeod, Steve Clark, Goldie Ghamari and Jeremy Roberts for keeping in touch with me around the clock, and giving me a real sense of what the people of the Ottawa region are facing as the recovery effort gets underway.
There are resources available for those who are displaced.
Approximately 60 buildings were wiped out or partially destroyed in Dunrobin, Ont., while in Gatineau more than 215 buildings were damaged or destroyed.
"There will be people who don't have power tomorrow morning".
Schools also announced they would be closed on Monday.
Prime Minister Justin Trudeau tweeted Saturday that he'd spoken with the mayors of Ottawa and Gatineau to offer federal assistance.
"We're monitoring the situation and thinking of everyone affected", he said on Twitter.
'It's pretty devastating': Ottawa family speaks about losing house in tornado
The police said "meteorological phenomena" had damaged buildings and forced the closure of several streets near Mont-Bleu high school in Hull.
Ottawa resident Glenn Johnson said he and his partner were in their kitchen just after 5:30 p.m. when the storm blew out their windows. "So, in perspective, we've got some damage but a lot of people got hit a lot worse than we did", Mr. Johnson said Sunday.
The second tornado was classified as a high end EF-2 with wind speeds of up 137mph and it hit the neighborhood of Arlington Woods in Ottawa.
"There had been kids in the park right behind our place up until about 15 minutes before this happened and there was a big tree that went down in the park where the kids' playground is", Johnson said.
The Greater Toronto Area saw thunderstorms and wind gusts of up to 80 kilometres per hour, also leaving thousands without power.
Meantime, hydro crews are working to untangle and fix fallen power lines and restore electricity to the region.
All utilities say hundreds of their crews are working around the clock in order to restore power to all of their customers as soon as possible.
Power in the area has also been affected with around 167,000 Hydro One customers who were without electricity late Friday evening. "They're working in risky conditions and, at times, are not able to start repairs until the wind weakens".
Ford made the promise after meeting more local residents, returning to homes that the tornadoes had in some cases levelled, in the pastoral Dunrobin area littered with snapped power lines and scattered branches.