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[–]Vulptex 3 insightful - 2 fun3 insightful - 1 fun4 insightful - 2 fun -  (1 child)

This does seem unusual though. Considering where Oregon is, there's another culprit which is unfortunately likely: Yellowstone.

[–]yetanotherone_sigh 4 insightful - 2 fun4 insightful - 1 fun5 insightful - 2 fun -  (0 children)

A Yellowstone supervolcano eruption would be very bad. But magma takes a long time to percolate to the surface and it hasn't been doing that. So it won't happen instantly. News and media hype and movies aside, it takes a while. Mt. St. Helens in 1980 took about 2 months to go from no activity to a big eruption... they had lots of warning. And Mt. St. Helens had been dormant only since the time of the Lewis and Clark expedition. So it wasn't really dormant at all... just on a pause. Yellowstone is many orders of magnitude bigger than that, and will take a lot more time to become active.

Also, these quakes are like 600 miles away from there and are on the rim of the Pacific subduction zone (on the edge of the North American plate). So they are very unrelated events.