Yellowstone

Yellowstone was exaggerated a bit, geologists can only honestly give a range based on historical previous eruptions. Because it's massively inconsistent, the "we're due!" thoughts are off base.

Also to ease your worries, if there were volcanic activity that would lead to an eruption, there would be a massive number of other very gradual signs leading up to an actual eruption. We don't have to worry about it in our lifetimes.