Experts are issuing renewed and urgent alerts regarding the Cascadia Subduction Zone — a 700-mile fault line located off the coasts of Oregon, Washington, and northern California that has not experienced a significant rupture in over 320 years. When it finally shifts, it could trigger magnitude 9 earthquakes that may generate 100-foot waves impacting coastal communities in as little as 20 minutes. Additionally, Alaska's melting Barry Arm fjord presents another risk, with possible waves reaching heights of 1,000 feet. Hawaii is also vulnerable to tsunamis originating from the Pacific. Here’s what every resident along the coast should be aware of.
