Possible industry-related earthquake jolts northern Alberta Saturday night
Some residents of northwestern Alberta reported feeling an earthquake that was recorded in the region on Saturday night.
Earthquakes Canada said the quake had a preliminary magnitude of 4.2, about 36 kilometres south of the city of Grande Prairie, Alta.
The quake is possibly an industry-related event, Earthquakes Canada said.
Taimi Mulder, an earthquake seismologist with Natural Resources Canada at the Pacific Geoscience Centre in Sidney, B.C., said the earthquake was reported at 9:13 p.m.
About 70,000 people live in Grande Prairie, located about 460 kilometres northwest of Edmonton.
"There was one report from someone quite close to the epicentre of the earthquake. They felt two sharp jolts," Mulder told CBC News in an interview Sunday.
"Most people in the Grande Prairie area felt it very lightly."
No damage was reported.
"Usually damage starts at around magnitude 5.0 and 5.5, depending on how close you are to the event and how well designed the building was, but our building code is very good and for buildings built after 1985. I would not expect to see damage," Mulder said.
Mulder said the earthquake was in a region that has previously seen industry-related events, including two in February.
A 4.7 magnitude earthquake was reported Feb. 20, about 60 kilometres south of Grande Prairie. It was lightly felt in the region including Edson, Jasper, Hinton and Edmonton. A 4.0 magnitude quake was reported in the same area earlier that same day.
CBC News has reached out to Alberta Energy Regulator for more details.
Earthquakes Canada's magnitude scale shows that quakes between 3.5 and 5.4 are "often felt, but rarely cause damage."
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