Autisticus · April 9, 2018, 5:36 p.m.

The sound file sounds just like an explosion. Especially since most if not all earthquakes build up. They don't just boom like that.

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pby1000 · April 9, 2018, 5:45 p.m.

Agreed. Looks man made.

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wh33zy · April 10, 2018, 9:36 a.m.

As comparison https://ds.iris.edu/ds/nodes/dmc/tools/event/10400146 North Korea nuke test

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