News

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...

Hydrothermal vents on the ocean floor, like the famous “black smokers,” and those on the floor of Yellowstone Lake have some general similarities, but...

On the morning of April 21, Hawaiian Volcano Observatory geologists visited the floor to document and sample deposits erupted by Kīlauea volcano...

The recent 2022 Mauna Loa eruption began just before midnight, at 11:21 p.m. on November 27.  The first caldera floor fissures were visible in webcams...

During the week of April 10, the Hawaiian Volcano Observatory upgraded the Hualālai Repeater station and installed a new webcam looking at the...