Experts Warn Cascadia Is Overdue For A 9.0 Earthquake
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Be informed. Build a kit. Make a plan.
Everyday you hear the warnings. Have you made a kit? Do you have a plan?
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If you're like most of us - you're not ready.
If that's you, we've got some great tips and valuable resources below to help you be prepared for whenever a disaster strikes.
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TICK. TOCK.
Think of Oregon geology as a clock, measuring time in earthquakes. Tick: a magnitude 8 quake. (Bigger than 1989 Bay Area quake that killed 63 people.) Tock: a magnitude 9 quake. (Same as the 2011 Japan quake that killed almost 16,000 people.) On average, a major quake happens in our area every 243 years, the last one was January 26, 1700 — 316 years ago. Yes. We are overdue.
When the next Big One does happen, a 700-mile long section of the tectonic plate known as the Juan de Fuca, stretching from British Columbia to Northern California, will slide beneath the North American plate, causing the entire Northwest coast-line to sink up to 6.6 feet. This won’t be a California-style short burst of energy quake in the earth’s upper crust. The Big One will be bigger, deeper, and last longer: 3–4 minutes, with dozens of after-shocks, some very powerful, for days, months, or later.
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 Cascadia Subduction Zone. Pacific Northwest. Click to Enlarge.
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Hillsides will slide. Buildings will collapse. Roads will buckle. High-rises will sway. Bridges will crack. Some will fall. Pipes will snap. Within 20 minutes, the first of several 40-foot tsunami waves will wash away the Oregon Coast’s low-lying towns.
If our next “subduction zone” quake unleashes its full potential, it will be the worst natural disaster in U.S. history.