News

A Final Environmental Assessment (EA) and Finding of No Significant Impact (FONSI) for the USGS Hilo Research Facility has been completed and is...

Yellowstone hydrothermal features can be acidic or basic depending not only on the source of the feeding fluids, but also bacteria that might resemble...

May 3rd, 2023, marked the fifth anniversary of the start of Kīlauea’s historic 2018 eruption that resulted in extensive lava flows from the East Rift...

Yellowstone's Upper Geyser Basin hosts the legendary Old Faithful, but it's also home to an isolated thermal group famous for its biscuits.  Though...

May 2023 marks the 99th anniversary of a sequence of explosive eruptions from Kīlauea's summit that occurred over 16 days from May 11–27, 1924. During...

Interested in knowing more about Yellowstone’s activity, as well as research results, from the past year?  We’ve got you covered—the Yellowstone...

Five years ago, volcanic activity at Kīlauea dramatically changed when magma intruded into the lower East Rift Zone (LERZ). What happened at Kīlauea...

HVO scientists conducted  Halema‘uma‘u fieldwork and a Kīlauea summit overflight on May 3, 2023. The Kīlauea Seismic Imaging Project continues, as...

The Timber Hill basalt tells a story of bygone days, when southwestern Montana looked very different and was a site of vigorous volcanic eruptions.

The Hawaiian Volcano Observatory (HVO) was founded in 1912. Today, over 111 years later, HVO is one of five volcano observatories supported by the U.S...