Earthquake felt Sunday morning near Rocky Mountain House, Alta.

A 4.3-magnitude earthquake was felt near Rocky Mountain House early Sunday morning.

The earthquake happened at 4 a.m. around 30 kilometres northwest of Rocky Mountain House, according to Natural Resources Canada. The quake was about 10 kilometres deep.

No damage has been reported. Only minor damage if anywould be expected with an earthquake of this magnitude, saidDavid Eaton, a professorwith the Department of Geoscience at the University of Calgary.

• 'A very short, sharp shock': Earthquake rattles central Alberta

However, those living in the area would feel it, he said.

"This is an area that is prone to earthquakes," Eaton said.

"It's right in that zone where you do expect people who are in proximity to the epicentre to feel it quite strongly."

There are several clusters of seismicityin the area that are well-known and studied in the area around Rocky Mountain House, Eaton added. One of them was active in the late 1980s and early 1990s and was linked to production from the Strachanoil pool, he said.

It's right in that zone where you do expect people who are in proximity to the epicentre to feel it quite strongly.-David Eaton

He could not say what caused Sunday's earthquake.

"It's an area which has a long kind of history known to be seismically active, and it predates any kind of hydraulic fracturing types of operations that have really ramped up in the last five to 10 years," Eaton said.

The Alberta Energy Regulator is aware of the earthquakebut spokeswoman Cara Tobincouldn't confirm whether it was related to industrial activity.

"While we cannot say absolutely either way at this time, it is unlikely to be related," she said. "There is no drilling or completion activitiesin the area at the moment."

In August 2014, a 4.3 magnitude earthquake struck in a similar location, she added.

Second quake in six days

This is the second earthquake in Alberta within one week.

The morning of March 4, a 4.6-magnitude earthquake struck about four kilometres southwest of Red Deer.

The one-kilometre-deepquake was "lightly felt" by residents inRed Deer and Sylvan Lake, according to Natural ResourcesCanada.

People reported on social media that tremor temporarily knocked out power insome areas of Sylvan Lake.

One resident in downtown Red Deer said she was asleep on her couch when the earthquake startled her awake last week.

"All of a sudden, the couch was shaking and everything is moving in my apartment," Colleen Jessesaid. "I sit up ... and I'm going, 'Is my apartment falling down?' And I look out the window and there is nothing.

"It was pretty scary."