Severe Toronto storm causes flooding, major power outages

• Here's what you need to know about traffic and transit disruptions.

A severe storm left many of Toronto's streets flooded, including the Don Valley Parkway, and thousands without power on Tuesday.

At its peak Tuesday afternoon,167,000 customers were without power, Toronto Hydro said.

Environment Canada issued a rainfall warning for the city on Tuesday morningwith a risk of thunderstorms continuing in the afternoon and evening. The warning was no longer in effect by the early afternoon, however there are still a number of major traffic and transit disruptions to be aware of.

No significant rainfall is expected for the rest of Tuesday, the City of Toronto said in a news release Tuesday afternoon.

The city said it received more than 700 calls to 311 about basement flooding.

Photojournalists across Toronto captured dramatic images of rescues and swamped carsas the city came to a standstill in flood-prone areas.

The Don Valley Parkway (DVP) which runs alongside the overflowing Don River in the city's east end is blocked in both directions due to flooding. Municipalities across the GTA have also warned residents to avoid flooded areas.

Crews were seen on Tuesday night cleaning mud off the roadway.

Toronto Fire said they rescued 12 people from flooding on the DVP, including one person who was plucked from their car's roof.

Crews have respondedto an extremely highnumber of calls related to flooding and elevator entrapments, Toronto Fire said.

Up to 110 millimetres of rain wasexpected to fall on Tuesday, withrainfall rates of 40 mm/hpossible at some points, Environment Canada said.

"Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible. Watch for possible washouts near rivers, creeks and culverts," the rainfall warning said.

TheToronto and Region Conservation Authority (TRCA) issued a flood warning on Tuesday afternoon,sayingthat the total rainfall expected could create "hazardous conditions" near bodies of water, includingslippery and unstable river banks.

• Were you affectedby flooding or power outages in Toronto? Share your photos, videos and stories with us by emailingask@cbc.ca.

All shorelines, rivers and streams in the GTA should be considered dangerous as heavy rainfall could result in higher flows, erosion and rapidly changing water levels, the (TRCA) said.

"Please exercise caution if you must be around any bodies of water, rivers or streams as well as the Lake Ontario shoreline," the TRCA said.

Toronto Fire responded to more than 500 emergency incidents amid flooding:

Toronto Fire responded to more than 500 emergency incidents amid flooding

2 months ago

Duration 4:23

A torrential downpour flooded Toronto and surrounding areas on Tuesday, causing power outages and leaving drivers stranded on major roadways. According to the Deputy Chief of Toronto Fire Services, during the height of the storm, the department received approximately two to three times more calls for emergency services than normal.

Late Tuesday evening, the Toronto District School Board said at least 20 schools were without power and some schools may have been affected by flooding.

The board said parents, guardians and caregivers of students attending a summer school program, camp, or child care program in a TDSB school on Wednesdaywill hear directly from the program operatorin the morning should there be any changeto operations. More information is available on the TDSB website.

'Storm on top of storm' dumped rain

David Phillips, senior climatologist with Environment and Climate Change Canada, said the system that brought the rainfall was "unique" from a meteorological perspective.

It was actually a series of separate storms that consecutively drenched the GTA, but particularly the city of Toronto, Phillipssaid.

"There was a line of storms from London to the west part of Toronto that lined up like a parade, like jumbo jets on the airport tarmac. And there was storm on top of storm coming in one after the other, dropping their load of precipitation," he told CBC News Network.

WATCH | Union Stationflooded after heavy rain:

Union Station flooded following torrential downpours in southern Ontario

2 months ago

Duration 4:15

A severe storm has led to flooded streets in Toronto and transit disruptions, including at Union Station. CBCs Lisa Xing has the latest on how the storm is affecting commuters across the city.

About 98 millimetres of rainfall was recorded at PearsonInternationalAirport in Mississauga, while roughly 84millimetres fell in the downtown core of Toronto within a few hours, according to Environment Canada.

"It was the intensity. We saw 30 millimetres of rain in 30 minutes. That rivals what you would see in a jungle kind of situation," Phillipssaid.

It has already been an unusually wet spring and summer in much of the GTA. From April 1 until yesterday, the region was drenched in roughly 166 per cent of the rainfall it would typically see in that same period, Phillips said.

"The ground is saturated and river courses are full," he added.

"This is the new reality. It used to be river flooding, now it is urban flooding So you end up with power outages, you end up with intersections flooded, roads flooded. It is not a surprise to see Toronto like it is."

Mayor urges people to be careful amid flooding

Speaking on Tuesday afternoon, Mayor Olivia Chow saidthe city is "massively investing in the state of repair so that there is less flooding going forward."

"Please besafe. Don't drive on flooded roads and stay away from streams, rivers[and]shorelines," she said.

The city'swastewater facilities have not been affected by the storm, Chow said.

Asked why the Don Valley Parkway wasn't closed earlier to drivers to prevent cars from driving through flooding roadways, Chow said she doesn't know.

WATCH | Toronto infrastructure not prepared for extreme weather, expertsays:

'It's like a water torture test,' says climatologist about intense Toronto rainfall

2 months ago

Duration 2:31

David Phillips, senior climatologist with Environment and Climate Change Canada, says he's not surprised by the amount of rain that has hit Toronto recently as the country deals with a new reality of extreme weather.

Ontario Premier Doug Ford, speaking from the premiers'meeting in Halifax, said he will reach out to Chow to find out what the city might need as it recovers from the storm.

"Thank God everyone's OK," Ford said.

The relentless downpours caused significant flooding in some parts of the city, especially inlow-lying areas close to Lake Ontario.

Near the corner of King Street W.and Atlantic Avenue W., a stretch road historically prone to flash flooding, abandoned heavy constructionmachinery and a pickup truckwere seen half submerged in water.

Several inches of water alsoaccumulated in areas of Union Station, the city's biggest transit hub, withwater from inside cascadingdown exterior staircases.

TTC trains did not stopat Union for hours. Staff "actively" pumpedwater out of the station, the city said.

The scenes were reminiscent of the major flood that hit the city in July 2013.

WATCH | Flooding on Lake Shore Boulevard W.:

City asks people to avoid Lake Shore Blvd. W. because of flooding

2 months ago

Duration 0:36

The City of Toronto is warning people to stay away from Lake Shore Boulevard W., particularly between Parkside and Ontario drives due to flooding.

Entire GTA hit by rain system

Peel police warned drivers that downpours were causing manhole covers to lift out of place. They urged drivers to be cautious and use the full headlight system on their vehicles.

Toronto Pearson International Airport said a section of Convair Drive, near the airport in Mississauga, wasclosed due to flooding. However, there wasno floodingat the airport. Some departures and arrivals were reported to be delayed.

People travelling to Pearsonareadvised to map out their route to avoid any road closures and give themselves extra time to arrive safely, the airport said.

Tuesday was the fifth wettest day ever recorded at Pearson, with the airport recording97.8millimetres of rain. The severe storm also broke the previous recordfor daily rainfall on July 16, 1941, when 25.9 millimetres of rain fell at the airport.

WATCH | CBC's Colette Kennedy how Tuesday's storm put Toronto under water:

Toronto is under water again. Here's what happened

1 month ago

Duration 2:47

CBC Toronto meteorologist Colette Kennedy explains what led to such severe flooding in parts of the GTA on Tuesday.