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The City of Portland, Oregon

Portland Bureau of Emergency Management

Readiness. Response. Recovery.

Phone: 503-823-4375

Fax: 503-823-3903

TDD: 503-823-3947

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Thursday (1/26) marks anniversary of last major Cascadia earthquake

USGS: Cascadia Subduction Zone MapThursday (1/26) marks the anniversary of the great Cascadia Subduction Zone earthquake that shook the Pacific Northwest on January 26, 1700. Scientists believe Oregon is in the average window of time during which another massive, destructive quake could occur.


There are many actions you can take to prepare for the next earthquake. Click on the links below for more information:

At 11:00 a.m. on Thursday – to coincide with the Cascadia Subduction Zone earthquake anniversary – the Portland Bureau of Emergency Management is conducting a citywide test of Portland’s community notification system. Click here for more details. You can sign up to receive the test and future notifications by visiting