1872 North Cascades earthquake
Encyclopedia
The 1872 North Cascades earthquake struck Washington state on December 14, 1872. Causing intense shaking in Oregon, Idaho, Montana, British Columbia
, and Alberta, the earthquake's magnitude was between 6.8 and 7.4. The exact magnitude and epicenter location were never determined.
The largest historical earthquake in Washington's history, it was followed by a magnitude 5.0 aftershock
on December 30.
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
, and Alberta, the earthquake's magnitude was between 6.8 and 7.4. The exact magnitude and epicenter location were never determined.
The largest historical earthquake in Washington's history, it was followed by a magnitude 5.0 aftershock
Aftershock
An aftershock is a smaller earthquake that occurs after a previous large earthquake, in the same area of the main shock. If an aftershock is larger than the main shock, the aftershock is redesignated as the main shock and the original main shock is redesignated as a foreshock...
on December 30.