News

The 2022 eruption of Mauna Loa occurred late in the evening of November 27th. The eruption was preceded by intense earthquake activity about half an...

On March 21, 2024, HVO geologists made a routine visit to check on equipment at the summit of Kīlauea.

As the ground started shaking due to the 1959 Hebgen Lake earthquake, a mountain in Madison Canyon collapsed, devastating the area and causing...

In 2012, steam began to rise from beneath the cracked concrete of a telecommunication station at the summit of Pico Basile volcano on Bioko Island...

Yellowstone’s waters have been a subject of intense study for well over a century. A new database is now available summarizing water chemistry results...

On the Island of Hawaiʻi, frequent eruptions foster a close relationship between the USGS Hawaiian Volcano Observatory (HVO) and the Hawaiʻi County...

Scientists often strive for a big-picture approach to understanding a given problem. Sometimes, this big-picture thinking requires first zooming into...

In February, the volcanological community gathered for the 12th edition of Cities on Volcanoes (COV12), a conference of the International Association...

Road construction is a challenge in Yellowstone for a variety of reasons, including the abundant hydrothermal activity. This challenge is especially...

From January 31 to February 3, 2024, a magma intrusion into Kīlauea’s flank, southwest of the summit caldera, was the focus of attention at the USGS...