Hayden Island, is an 8 mile long island in the middle of the Columbia River, between Vancouver Washington and Portland, Oregon. It’s a great place to live, work and play.

But geologists, first responders and government officials say much of western Oregon and Washington will experience a 9.0 Megathrust Earthquake. Maybe in 50 years. Maybe tomorrow. It will have an unparalleled impact. The last Cascadia Subduction Zone Earthquake happened in January, 1700.

Here are Recent NW Earthquakes. The Pacific Northwest Seismic Network collects information from 400 seismometers in Oregon and Washington. It’s based at the UW in Seattle and is affiliated with the UO in Eugene. The Oregon segment includes 190 sensor stations.

This website aggregates content from emergency experts and provides information specific to Hayden Island. It walks you though steps you may want to take to prepare for The Big One.

Oregon Geology’s map shows the actual shake map from the 2011 earthquake in Tohoku, Japan and the anticipated full Cascadia earthquake. The lightest shaking in green may wake sleeping people.

Geologists say the next 9.0 Cascadia Subduction Zone Earthquake could happen anytime. We are now 316 years into a 200-500 year cycle.

It will likely be a disaster. The coast will be hardest hit. Hillsides will slide. Buildings will collapse. Roads will buckle. High-rises will sway. Pipes will snap. The ground will slide, turn to mush and water will spring out. People will be injured and killed. There’s little doubt about it.

The Cascadia Region Earthquake Workgroup has created a detailed magnitude 9.0 earthquake scenario.

They even contracted with Dark Horse Comics to create Without Warning, a dramatic graphic tale.

The Portland Bureau of Emergency Management, Multnomah County Emergency Management, Clark County Regional Emergency Services Agency and Neighorhood Emergency Teams, among others, are preparing for the inevitable. Shouldn’t you?

Nobody knows when the Big One will happen…only that it WILL.

The New Yorker’s article, The Really Big One, won a Pulitzer Prize for author Kathryn Schulz. In her article, Shulz wrote, “We now know that the odds of the big Cascadia earthquake happening in the next fifty years are roughly one in three.” After The Big One by Adam Rothstein, a local author, describes a likely aftermath.