This earthquake , larger than the 1906 San Francisco earthquake , is Canada 's largest earthquake recorded by seismometers . However , the greatest earthquake in Canadian history was the 1700 Cascadia earthquake , a megathrust earthquake that occurred along the Pacific Northwest coast from Northern California to southwestern British Columbia which reached magnitude 9 on the Richter magnitude scale
1700 Cascadia earthquake
1700 Cascadia earthquake
1949 Queen Charlotte Islands earthquake