The second earthquake was 27 km north of the first one. Deep earthquakes on the east side of the Olympic Peninsula are not uncommon. This is an automated web page produced after a significant earthquake to give essential information about the earthquake and previous earthquake activity in the region. This information will be updated as needed. If you would like, you may fill out a form describing how the earthquake affected you.
Shallow events are black.
Events deeper than 35 km are green. A map showing a closer view of the earthquake and prior historical earthquakes with magnitude 3.5 or greater. Shallow events are black. Events deeper than 35 km are green. A list of 10 big earthquakes preceding the mainshock that are closest to it and have a magnitude greater than 3.5.