Reply #3: Handpuppet's site was up near the Canadian border [View All]

and Yellowstone is in Wyoming.

The site Handpuppet referred to is likely artifact of some description, and hasn't appeared as seismic activity at the USGS site.

However, there is always a low level of seismicity in and around the Yellowstone caldera, with rising and then lowering of the basin as lava beneath the crust seems to flow back and forth.

The problem is that we really don't know that much about the supervolcanoes, not having had the equipment around for the last few eruptions. We can only hope that they give the same sort of warning with increased and regular harmonic quakes before they blow that ordinary volcanoes do. We just don't know.

In any case, neither the uplift of one area of the caldera nor the present level of seismicity are out of the ordinary for Yellowstone. It's done all this before. However, it has erupted regularaly in the past, and it's now nearly 40,000 years overdue for an eruption.