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

Seismometer

The number of earthquakes in Yellowstone more than doubled in August to 207, according to the U.S. Geological Survey.
But scientists issued a reassurance that this was “normal.”
And anyone who is worried about it is the same kind of person who would worry about, say, Asteroid 2014 RA.
Which was discovered today, two days after it passed closer to Earth than the orbits of some man-made satellites.
Talk about worrywarts.

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