If I stood close to the window of my classroom and looked hard west, I saw the estuary and beyond was the Pacific Ocean. The waves seemed to march endlessly to shore, but after the Alaska earthquake in 1964, a friend of mine saw water draw back below any low tide he’d ever seen, the seabed exposed before the tsunami pushed east and took out bridges and houses.

The last “great quake” in the Cascadia subduction zone, a magnitude of at least 9, took place more than three hundred years ago. It’s likely that most every human soul on what would later be called the Oregon coast drowned.

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