The seismometer directly to the east seems to be echoing whatever this is, but to a far lesser extent.
Is this man made? Is it a kid kicking the box holding the instruments? The USGS is clearly not in the least concerned, based on their website.
I think I need to get someone on the phone who can explain something about what we are seeing here, but that will have to wait until the government reopens.
I'm fascinated, and I gotta find an explanation.