TOFINO, B.C. - Officials say a small earthquake has struck off the west coast of Vancouver Island.

The United States Geological Survey says the 4.5-magnitude quake struck at 2:26 a.m. Wednesday.

The tremor's epicentre was recorded about 170 kilometres west of Tofino at a depth of 10 kilometres.

No injuries or damage were reported.

Emergency Info BC said in a tweet that the earthquake did not pose any threat.