OTTAWA - Natural Resources Canada says a 4.5 magnitude earthquake off British Columbia's coast was an aftershock to recent seismic activity in the Pacific Ocean.

It says there were no reports of damage and none would be expected.

A tsunami also wasn't expected.

The quake struck at 12:26 p.m. on Monday about 180 kilometres west of Port Alice on northern Vanocuver Island at a depth of 10 kilometres.

A quake and several recent aftershocks have shaken the same area since Oct. 21, including three on that day ranging in magnitude from 6.5 to 6.8.