Earthquakes shake Edmonton and Northern Alberta

Earthquakes shake Edmonton and Northern Alberta

On Tuesday, Earthquakes Canada says two 5.2-magnitude quakes and a 5.8-magnitude quake hit Alberta and felt in Edmonton, Grand Prairie and B.C.

This image shows the approximate location of a 5.2-magnitude earthquake reported in northern Alberta Tuesday, Edmonton

This image shows the approximate location of a 5.2-magnitude earthquake reported in northern Alberta Tuesday.

Aftershocks continued to shake the province after three of the largest earthquakes ever recorded in Alberta rattled the province on Tuesday.

Earthquakes Canada said similar. seismic events made their way through northwestern Alberta overnight.

The largest was a magnitude 5.8 earthquake shortly before 6 p.m. MT.

“A series of earthquakes has occurred in northwestern Alberta. The largest, a M 5.8 earthquake, was preceded by two M 5.2 earthquakes, and followed by several felt events,” reads a post on the Earthquakes Canada website.

All three quakes were detected near Reno, Alta., a rural town 360 kilometres northwest of Edmonton.

The aftereffects were felt in various towns and neighbourhoods across the province.

“Strongly felt close to Reno,” reads a post on the Earthquakes Canada website. “Lightly felt in eastern British Columbia and western Alberta. There have been a number of felt aftershocks in the same area.”

The 5.0-magnitude aftershock shook the province around 7:55 p.m MT and was “lightly felt” by some residents in the area.

Three more aftershocks have since been detected. Each was recorded at a magnitude of 4.0.

Joseph Farrugia, a seismic analyst with Natural Resources Canada, said a 5.8-magnitude quake is strong enough to cause damage but there haven’t been any reports so far.

A 5.8 earthquake would be the strongest natural earthquake ever reported in Alberta. Farrugia said.

The province’s strongest natural earthquake — magnitude 5.4 — occurred in April 2001 near the Alberta-B.C. border.

“It’s uncommon and certainly scary for people who live in the area.”

Farrugia said smaller aftershocks are possible in the area over the next few days.

“These earthquakes do occur naturally, just due to faults being present underground and when those stresses change and those faults decide to release that energy, earthquakes happen.”

The depth of Tuesday’s largest quake was estimated to be at a depth of two kilometres.

Reports from citizens show the biggest earthquake was also felt in Edmonton, Calgary and Fort McMurray and other communities in Alberta and northern B.C.

Before Tuesday’s earthquakes, at least three other events were recorded in the Reno area within the last week — two 4.1-magnitude quakes and one that measured as 4.5 magnitude.

A preliminary investigation by the Alberta Energy Regulator of the tremors detected last week determined they were likely caused by natural tectonic activity, which is common in the region.

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