Magnitude 4.7 earthquake strikes off Vancouver Island

Anearthquakehas jolted the area off northwestern Vancouver Island, the second since Wednesday.

Earthquakes Canada said the magnitude 4.7 quake occured at 4:28 a.m. PT.

The U.S. Geological Survey (USGS) had initiallyreporteda magnitude of 4.9.

It was centred 158 kilometres southwest of Port Hardy off the west coast of the Island and was at a depth of 10 kilometres.

The Friday morning quake follows a 4.4 tremor off western Vancouver Island and a 4.2 quake in Washington State, southwest of Seattle, both on Wednesday night.

Friday's stronger quake was just over 3.5kilometres furthereast than the one that occurred two days earlier, according to the USGS.

Earthquakes Canada website says a magnitude 4 quake, especially at 4.7 and above, is strong enough to make walls creak and hanging objects swing.

But the site says earthquakes of this magnitude are not expected to cause major damage or injuries.