[MineralMan]

"What you are looking at is normal.

At 1301 (times rough) is the Japan earthquake being noticed by the sensors.

At 1315-1345, the waves you see are simply echos and the long waves of the Japanese earthquake arriving.
"

That's what I thought. The excursions on this chart don't look like anything big locally. Rather, they look like these instruments were registering the Japan quake.

It's dangerous to project, based on no knowledge of seismology, and that's what we're seeing here. Someone found the Yellowstone charts and misinterpreted pretty small-scale measurements.

[UCANSEE2]

An earthquake in Japan could trigger quakes on the opposite side of the planet, even in Yellowstone Caldera. But that wouldn't necessarily mean the caldera would blow as the two are not necessarily related. The movement of plates could increase pressure and cause it to blow, but could also RELIEVE pressure under the 'dome'.