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The Yellowstone volcanic system has hosted some very large eruptions. But there have been much larger volcanic explosions in geologic history...

When lava poured out over the floor of Moku‘āweoweo, Mauna Loa’s summit caldera, late on the night of November 27, 2022, it was still many hours away...

This release was originally shared by the Department of the Interior. 

Yellowstone gets rattled by plenty of small earthquakes—between 1,500 and 2,500 located events in a typical year—but large damaging earthquakes have...

The eruption produced 2,600 flashes per minute at peak intensity. Scientists used the lightning to peer into the ash cloud, teasing out new details of...

Locating an earthquake in an absolute sense can come with considerable uncertainty, but locating earthquakes relative to one another is far more...

Geyser Hill, near Old Faithful, has experienced some recent changes, with a general increase in thermal and geyser activity. The changes are...

Monitoring data from Yellowstone are not just useful for assessing the potential for volcanic eruptions there.  We can also use what we learn from...

In a recent “Volcano Watch” article, we learned about a remote sensing technique known as InSAR. This method of using satellite radar signals to...

Although Yellowstone Caldera might be better known, the slightly older Valles Caldera, in New Mexico, was where some of the fundamental...