in British Columbia 1946
Central Vancouver Island.
Crustal earthquake, very few aftershocks. Much
damage in central Vancouver Island, and slight
damage in the Lower Mainland. Felt strongly all
over Vancouver Island, throughout the lower
Island's largest historic earthquake (and
Canada's largest historic onshore earthquake) was
a magnitude 7.3 event that occurred at 10:15 a.m.
on Sunday June 23, 1946. The epicentre was in the
Forbidden Plateau area of central Vancouver
Island, just to the west of the communities of
Courtenay and Campbell River.
This earthquake caused
considerable damage on Vancouver Island, and was
felt as far away as Portland Oregon, and Prince
Rupert B.C. The earthquake knocked down 75% of
the chimneys in the closest communities,
Cumberland, Union Bay, and Courtenay and did
considerable damage in Comox, Port Alberni, and
Powell River (on the eastern side of Georgia
Strait). A number of chimneys were shaken down in
Victoria and people in Victoria and Vancouver
were frightened - many running into the streets.
Two deaths resulted from this earthquake, one due
to drowning when a small boat capsized in an
earthquake-generated wave, and the other from a
heart attack in Seattle.