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

K.W., a Denver reader, regarding QT’s noting there were 48 earthquakes at Yellowstone in February, down from 53 in January, as we searched for anything in this country that wasn’t in worse shape than it was a couple of months month before, writes:
“I’m breaking out the calculator here, February only has 28 days, while January has 31. That means that there were, on average, 1.714 earthquakes per day in February and 1.069 earthquakes per day in January.  That translates to a 0.26% increase in the number of earthquakes in February over January.”
So the search continues.

WRITE TO QT:  qt@zaysmith.com

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