A 3.4 magnitude earthquake that struck off B.C.'s South Coast Saturday night was lightly felt by residents throughout the region, officials say.

Earthquakes Canada said the quake struck about 30 kilometres northeast of Sechelt, B.C. on the Sunshine Coast. No damage was reported or expected to occur.

Residents on the Sunshine Coast and Nanaimo reportedly felt the ground shake. Others living near Squamish took to social media to describe the tremors they felt.

Meanwhile, the City of Vancouver took the opportunity to remind residents to be prepared for the big one.

Earthquakes are common in the Pacific Northwest due to locked geological plates under the ocean floor called the Cascadia subduction zone.

A local seismologist has said the odds of a megathrust earthquake and tsunami on Vancouver Island in the next 50 years is about one-in-10.