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Canada Did you hear it? Frost quakes rumble through southern Ontario

15:20  14 february  2020
15:20  14 february  2020 Source:   theweathernetwork.com

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It 's able to accommodate around 260 people. "A lot of our people suffer from mental health issues and they just don't like crowds as it is," said the The Ottawa Mission said it 's asking for donations of coats, gloves and boots to help. ' Frost quakes ' rumble through southern , eastern Ontario .

Frost Quake , a bourbon barrel-aged barley wine, was released last Saturday at their location in “ It seemed like a frost quake was the perfect pairing for that, because it ’s like this intense winter “Unfortunately, we wouldn’t be able to do this one this year because you have to age the bourbon

Southern Ontario woke up Friday to the coldest temperatures of the winter season so far as overnight lows plummeted into the -20s, feeling like the -30s when you factor in the wind chill. But for some residents, it wasn't the cold that kept them awake, rather "loud booms" echoing through the night.

As temperatures bottomed out late Thursday, people took to Twitter to report booming sounds and the ground shaking in the Toronto area -- likely the rare phenomenon known as cryoseism, or "frost quakes."

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Did you hear a loud boom overnight Thursday? According to Peel Regional Police, they received over 100 calls Those loud booms heard around southern ON last night were " frost quakes " - water in " It 's not a guarantee yet that this is a snowstorm for the GTA however, we know there's going to be a

“Well, cold enough to cause frost quakes here in Ontario , feeling the house rattle. Wasn’t aware of the phenomena till newscasts reporting thousands of people are hearing the loud booms in the “ It ’s almost like an earthquake because it ’s very close to the surface. You will feel a little bit of shaking

HOW DOES THIS HAPPEN? FROST QUAKES EXPLAINED

a close up of a snow covered slope © Provided by The Weather Network "Cryoseism is a special form of seismic event (ie: earthquake), not caused by moving tectonic plates, but instead, it is a result of the sudden onset of extreme cold," explains Weather Network meteorologist Scott Sutherland.

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“I was scared and thought it was the furnace. I kept walking through the house. I had everyone’s jackets on the table in case we had to run out of here.” Wrote another: “Thank you for reporting this because I was freaking out all night.” Frost Quakes . Did you hear loud booms or banging sounds

A frost quake —or cryoseism, if you want to use the scientific name—isn't a "real" earthquake, because it isn't tectonic. Frost quakes are also the result of a sudden release of pressure, but the root cause of that pressure is very different—more akin to the forces that cause potholes in roads than those that

As the sudden influx of frigid air leaches heat from the ground, freezing temperatures spread deeper and deeper under the surface, where they reach groundwater flowing through soil and percolating through rock, and as a result, that water freezes solid.

"Since water expands when it freezes, this newly-formed ice puts sudden and intense pressures on the rock and soil, and when that pressure gets to be too much, the ground suddenly cracks, emitting a loud bang," Sutherland adds.

  Did you hear it? Frost quakes rumble through southern Ontario © Provided by The Weather Network The process of cryoseism. Credit: Getty Images/Scott Sutherland

While these can be quite loud for anyone who is in the immediate vicinity, and they can even shake the ground nearby, they are typically not heard or felt beyond about a city block away. This is because they are a very localized effect, that doesn't produce enough energy to be felt or heard at longer distances (as a tectonic earthquake would).

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Reports of frost quakes have surfaced in eastern Ontario and southern Quebec once again. Does anyone know any more about them than we did last year? And it was probably responsible for the frost quakes many people heard after temperatures plummeted. . Nicole Mortillaro.

Frost quakes , also known as cryoseisms, occur after precipitation and bitterly cold temperatures. “Ice can be very rigid at cold temperatures, and as it "All my neighbours heard it , it was impossible to sleep through it and it sounded like it was coming from the house. I have never heard a sound like

As such, frost quakes aren't necessarily dangerous, although they can be quite alarming.

Most often, frost quakes occur between midnight and dawn, when temperatures are coldest, and in areas with little snow on the ground, since a layer of snow will insulate the ground from the falling temperatures. In some cases, though, strong winds not only produce extreme windchills, but also drive blowing snow, exposing areas of the ground and making them vulnerable to cryoseismic events.

a map of the snow © Provided by The Weather Network

With files from Scott Sutherland

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