Yellowstone Volcano Eruption June 30 2024. Despite the intensity and size of the black diamond pool eruption in yellowstone on tuesday, geologists categorized it as a small hydrothermal explosion. A volcanic eruption at yellowstone is unlikely anytime soon, but evidence is growing that a violent hydrothermal, or steam, explosion is possible.

Here’s what to know about the seismic activity. Despite the intensity and size of the black diamond pool eruption in yellowstone on tuesday, geologists categorized it as a small hydrothermal explosion.