The 4.8 magnitude quake hit 18 kilometres east-northeast of Tofino, B.C.at a depth of 24 kilometres.
A tsunami is not expected and there were no report reports of damage.
Residents in Courtenay, Campbell River and Qualicum Beach reported beds shaking and dishes rattling in their cupboards.
"Staying in a log cabin in Tofino and we thought a truck had hit something," tweeted one resident.
Hayes Bishop, who works at Middle Beach Lodge in Tofino said the shaking lasted for about 20 seconds.
"I felt some vibrations and I looked up and I was able to see the window shaking," he said. "Yeah you could definitely feel it."
Quite a few of the guests came downstairs to ask if that was indeed an earthquake. and there is definitely some cause for concern because we are very close to the ocean here."
The quake was also felt on the Gulf Islands and as far away as the Lower Mainland according to some reports.