Yellowstone has several stages of eruption, from localized hydrothermal explosions which are fairly common to a supervolcanic eruption which would be a worldwide catastrophe within a few years of the eruption.
It is best to go directly to the USGS volcano watch website for the expert opinion. Yellowstone is currently at the normal green stage right now.
>Yellowstone is currently at the normal green stage right now.
Dangit! I wanted at least a little scare, can’t they upgrade it to yellow?
;)