When Canadian tornado expert David Sills studied the forecast Saturday morning, he never expected the storm line to Windsor, Ontario, to soon strengthen as Canada’s top right in decades, wreaking havoc south of Ontario and Quebec.
Sills, who is the executive director of the Tornado of the North Project at Western University, he was out gardening at his home in London, Ontario, when he heard a murmur in the distance; he could not believe that the storm line was still so active.
“I’m thinking, ‘What? Why is this still going on?'”
He went back inside to study the forecast, and that was when the storm came to his door.
“Suddenly it hits and it’s like a hurricane,” Sills said. “It’s getting stronger … I saw a tree coming down on my neighbor’s roof across the street.”
That’s when he learned it wasn’t a normal storm.
Strong winds lift dirt before the storm reaches Saint-Bernard-de-Michaudville, Que. (Daniel Thomas / Radio-Canada)
An ominous wall of wind and rain
A right, pronounced deh-RAY-cho, is a long-lasting, rapid thunderstorm that causes widespread wind damage. This particular storm system was powered by a heat dome in the eastern United States.
According to Sills, the system formed Saturday morning south of Chicago and then crossed the border into the Windsor area, where it began causing damage.
When he arrived in Kitchener, Sills said the storm was producing gusts of up to 132 km / h.
Unlike rotating winds in a hurricane or tornado, right winds are straight. This is not to say that it is less harmful; its winds can knock down trees and lift roofs. Another feature of a right is that, unlike the slow construction of a supercell storm, the commercial end of a right is in front.
That’s why when he attends a right, Sills said, it often looks like an ominous wall of wind and rain.
“When you hit, usually the worst is in a couple of minutes after you hit,” he said.
Part of a service pole is on a sidewalk, along with the roof of a hardware store that was lifted by extreme winds during Saturday’s storm, in the community of Hammond in Clarence-Rockland, Ont. (Justin Tang / The Canadian Press)
The fact that this destructive wind wall is even worse is that it can sometimes produce tornadoes as well.
“It’s really just a wind spectrum that affects a long area,” Sills said.
So far, Northern Tornadoes project field teams have identified at least one EF2 tornado, which hit Uxbridge, Ontario, with wind speeds of up to 195 km / h.
The team is investigating at least four other possible tornadoes in southern Ottawa, London, Ontario, and Rawdon, Que.
Sills said he hopes there could be even more.
Even if this is the case, “the overwhelming majority of the damage was caused by straight-ahead right winds,” said Environment Canada warning preparation meteorologist Peter Kimbell.
He said both Ottawa and Toronto airports were 120 km / h.
A rare event: Canada ‘s first law since 1999
The last significant set of rights to arrive in Canada was in the 1990s, including one in 1999. According to the US National Oceanic and Atmospheric Administrationthat storm cut through Thunder Bay and sparsely populated areas of northern Ontario before crossing into Quebec, where it killed one person, felled trees, damaged buildings, and capsized ships in the Montreal area.
“It’s the widespread nature of a right that can really wreak havoc on a city,” Sills said.
What made Saturday’s storm especially unfortunate was that several urban centers were directly in its path.
“This was an unusual event because it affected the most populous part of Canada,” Kimbell said.
The system formed Saturday morning south of Chicago and then moved to Ontario, according to tornado expert David Sills. (Environment and Climate Change Canada / CBC News)
Environment and Climate Change Canada issued a severe storm transmission alert, triggering alarms on people’s cell phones in Ontario and Quebec. It was the first time a new feature was tested, which allowed the forecaster to activate an alert for extreme storms with strong winds.
“This is the first time they’ve done it, and it probably saved lives,” Sills said.
However, the storm left a trail of destruction on its way, killing 10 people and leaving approximately 900,000 homes and businesses without electricity in Ontario and Quebec at its peak. It continued to Maine, where there were also reports of damage.
Climate change could bring more rights
It is difficult to determine whether or not the rare event could be related to climate change. Because rights are so rare in Canada, Sills said it is impossible to say whether they are increasing or not.
But he said the ingredients needed to form a right “can come together more often” as a result of the effects of climate change.
A right happens when there is a lot of heat and humidity available and they are often tied to heat domes. Sills said climate projections point to a warmer atmosphere that will move northward, meaning this is the kind of storm Canadians can expect to see more of in the future.
Aerial footage captured from a drone shows the aftermath of Saturday’s storm in Uxbridge, Ontario. (Sue Reid / CBC News)
There’s always something to learn from extreme weather events, Sills said, and one key thing for him after this storm is that computer modeling needs to catch up.
“There was not much indication in the models of this great right,” he said.
“The computer models we rely on to give us notice of such events have a long way to go.”