The cargo ship MV Sun Sea sits in harbour at the Canadian naval base at Esquimalt on Vancouver Island, Aug. 13, 2010. (CARMINE MARINELLI/QMI AGENCY)

A powerful earthquake in the Pacific Ocean around midnight Friday triggered tsunami warnings that were later cancelled.

The U.S. Geological Service said the earthquake registered a magnitude 7.6 and was placed at 91 km west of Craig, Alaska.

The West Coast and Alaska Tsunami Warning Center initially issued tsunami warnings from the north tip of Vancouver Island in B.C. to the coastal areas of Alaska, but cancelled them two hours after the quake.

A resident of Juneau, which is located approximately 330 km south of the quake's origin, emailed the Juneau Empire newspaper to inform them that it "shook my Juneau home violently enough to awaken the entire family. No apparent damage."

He added that there was no apparent damage to the home.