Canada earthquake
7.7 magnitude earthquake struck off Canada (USGS)
7.7 magnitude earthquake struck off Canada (USGS)
7.7 magnitude earthquake struck off Canada (USGS)

A tsunami warning has been issued after a 7.7 magnitude quake struck near Prince Rupert, British Columbia, Canada, late Saturday. No report of damage has emerged.

The U.S. Geological survey said that an earthquake of magnitude 7.7 hit the Queen Charlotte Islands region at 20:04 UTC.

The quake had a depth of 17.5 km (10.9 miles) and was centered 139 km (86 miles) South of Masset, 202 km (125 miles) SSW of Prince Rupert, 293 km (182 miles) SW of Terrace and 556 km (345 miles) NW of Campbell River, Canada.

A warning has been issued for the coastal areas of British Columbia, Alaska, Northern California, Oregon and Washington State by the National Weather Service.

"The Tsunami warning continues in effect for the coastal areas of British Columbia and Alaska from the North Tip of Vancouver Island British Columbia to Cape decision Alaska/located 85 miles of Sitka," National Weather Service said.

The USGS also measured the aftershock of magnitude 5.8 several minutes later the powerful quake.

Earthquakes Canada, a government agency, measured a 7.1 magnitude earthquake in the Haida Gwaii region.

"It was felt across much of north-central B.C., including Haida Gwaii, Prince Rupert, Quesnel, and Houston. There have been no reports of damage at this time," the agency said in a statement on its website.