Cancelled: 2nd Large Offshore Earthquake Tsunami Warnings for BC Coast

The earthquake happened along the same fault line as the one that struck off B.C.'s Haida Gwaii last October, but in a section that has not seen this kind of strong seismic activity for a few hundred years, says CBC meterologist and seismologist Johanna Wagstaffe.

B.C. tsunami warning cancelled after strong quake

7.5-magnitude tremor rattles coastlines of central B.C., southern Alaska

by CBC

A powerful earthquake sparked a tsunami warning along the coastlines of southern Alaska and British Columbia, but the alert was cancelled when no damaging waves were generated.

The U.S. Geological Survey said the quake had a preliminary reading of 7.5 and struck at 12:50 a.m. PT (11:50 p.m. local time Friday), about 102 kilometres west of Craig, Alaska and some 300 kilometres west-northwest of Prince Rupert, B.C.

The Alaska Tsunami Warning Center had issued a tsunami warning for the southern coast of Alaska, stretching for 765 kilometres to the northern tip of Vancouver Island — but the centre cancelled the warning a few hours later.

CBC meteorologist Joanna Wagstaffe said a small tsunami wave was generated off Port Alexander, Alaska. In addition, at least two strong aftershocks measuring 4.5 and 4.7 were reported after the initial quake.