Heavy rains lead to power outages, flash flooding in Toronto

Some parts of GTA hit with more than 100 millimetres


TORONTO – Record-smashing rains knocked out power for hundreds of thousands of residents across the Greater Toronto Area, including the majority of Mississauga, and so badly flooded some roads and major highways that drivers abandoned their waterlogged vehicles.

Mississauga, a city of more than 700,000, saw some of the worst of the blackouts with 80 per cent of the community plunged into the dark, according to power distributor Enersource. By around 10 p.m., only about 50,000 were without power.

Environment Canada said some parts of the GTA had been drenched with more than 100 millimetres of rain, trouncing the previous one-day rainfall record of 29.2 mm in 2008 for Toronto and even beating the 74.4 mm monthly average for July.

Water from flash flooding poured out of sewer drains while Toronto’s downtown core was dotted with abandoned vehicles, some sitting in water up to their windows. One woman, sporting a T-shirt and shorts, dove head-first through the window of her marooned car before wading away in the thigh-deep currents.

Drivers were not the only ones dealing with problems getting around after the severe thunderstorm system hit about 5 p.m.

All of Toronto’s subway service was temporarily halted due to power and signal issues. Some stations were also flooded. Partial service later resumed but large parts of the system were still shut down.

Go Train commuter service was also disrupted after portions of track along the western Lakeshore and Richmond Hill lines were left under water.


A rush-hour train became stranded in floodwaters up to the lower windows as it made its way north to Richmond Hill. The murky brown water spilled through the bottom floor of the carriages and sent riders fleeing for dry ground in the upper sections of the train.

“There’s a full-on river on either side of us… We. Are. Stuck. Hard,” passenger Jonah Cait quipped on Twitter.

Metrolinx spokeswoman Vanessa Thomas said the power was shut off and windows cranked open for ventilation on the double-decker train, which can carry up to 1,900 commuters during the evening rush.

Commuter Mike Li said the green-and-white train became stuck in a dipped part of the track and was trying to back out when it became paralyzed by encroaching floodwater.

“People take it for what it’s worth, but some are frustrated too,” he said.

Metrolinx said the Toronto police marine unit floated out in rescue boats to pull weary passengers through the windows about three and a-half hours after the train got stuck.

At Toronto’s Union Station transit hub, commuter Gilbert Bae worried about flooding in the basement of his Mississauga home as he waited several hours for a GO train back.

Bloor and Islington. (Photograph by Jonathan Chevreau)

“I’m feeling bad,” he said. “My wife keeps calling me but I cannot do anything.”

Air travellers were also affected. Porter Airlines tweeted at about 7 p.m. that it had cancelled all flights out of the city’s downtown airport for the rest of the evening due to power outages in the terminal.

Flooding even claimed Pearson airport’s website offline, as its computer server room got soaked by flooding.

As many as 300,000 Toronto Hydro customers lost power, while Hydro spokeswoman Tanya Bruckmueller said repair efforts might be further dragged out by the onset of nightfall.

“There’s not a lot that will change once it starts getting dark. It’ll be harder for the crews… they need to be able to identify where the damage is so it’ll take longer in the night.”

PowerStream Inc. said 20,000 customers were knocked off the grid in Markham and Richmond Hill. Later in the evening it said only about 100 in Markham were still without electricity.

The Don Valley Parkway, a major artery, was partly closed as the Toronto Region Conservation Authority said the Don River’s banks were at risk of collapse, while provincial police warned drivers to steer clear of parts of Highways 427, 401 and 27, all due to flooding.

Toronto police advised residents to stay at home if possible and avoid driving completely.

— With files from Clare Clancy

Scenes of the flood

Images shared on Twitter and elsewhere of flash flooding in Toronto showed submerged cars, knee and waist-deep water, pitch-black offices, and one stranded GO Train.

The heavy rain led to some overflowing rivers:

Transit-takers and officials snapped photos of subways deluged with water:


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Heavy rains lead to power outages, flash flooding in Toronto

  1. Hang in there, Toronto and stay safe! We in Calgary are thinking about you.

    • Nothing compared to what S Alberta went through.

      • This is not a contest…

        • Speaking as someone who lives in the heart of the affected area, it’s the truth.

      • That’s a shitty thing to say.

        • *Speaking as someone who lives in the heart of the affected area, it’s the truth.

          • You live in Toronto?

          • I live in South Mississauga, which got hammered.

    • Right on healthcareinsider!

    • So nice! We’re happy to see Alberta is finally starting to clear up & people can start to return to their homes! One day we’ll be a dry country ;)

  2. Hang in there Toronto and stay safe! We in Calgary are thinking about you.

  3. As someone said tonight ‘Summer rainstorms in that part of Ontario can get, ah, enthusiastic sometimes

    They got about four inches of rain in a fairly short period of time and
    hydrodynamics ensued, basically.’

    Yup, sums it up. No big deal.

      • Yup, lotta rain. It happens.

        Where I live, everybody has a sump pump and new houses aren’t allowed to have a basement.

        • A sump pump wouldn’t help you with this amount of rain, sweetie. So much for saying “yup, it happens.”

          • No, and stop being an ass.

            I meant a sump pump is standard in homes here.

      • Very scary for those people in the tunnels and stuck on the Go Train. I can tell you from personal experience being evacuated from my home in Calgary and also from living in Edmonton during the tornado that killed 26 people almost 30 years ago, that mother nature can be very overwhelming in her fury and we mere humans are pretty bloody helpless doing anything about it. I am very glad that everyone is safe there. This country has seen a lot of crisis and too much loss this past month.

  4. Canada is starting to look more and more like the Philippines every day.

  5. as a young man living in toronto we never compared ourselves to Calgary even in a joking manner, but at the same time this was still unfortunate

    • Really, why would that be….out of curiosity…is there that much animosity and has it always existed?

  6. Condolences & best wishes to those affected! Can anyone reading this plz support my petition to BAN roadside displays of abortion & prohibit it from being circulated through mail as well?

    Our children do NOT need to see & shouldnt EVER have to ask, why they’re seeing pictures of dismembered babies!! Its just not appropriate!!!

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