QT Yellowstone Caldera (the eruptions of which can be violent enough to send a layer of ash six feet deep as far away as Chicago and which erupts every 600,000 or so years and last erupted 640,000 years ago) update

An “energetic sequence” of 30 earthquakes magnitude 2 and larger hit Yellowstone late last week as part of a sudden swarm of more than 230 quakes.
But scientists reassure us that this is “fairly normal.”

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