Volcano Watch

The past two years of "Volcano Watch" articles from late May focused on commemorating the 49th and 50th anniversaries of the Mauna Ulu eruption...

It takes a village to run a volcano observatory. The position of Deputy Scientist-in-Charge (DSIC), once called Operations Manager but always known as...

The mission of the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) is "to monitor, investigate, and assess hazards from active volcanoes...

Many messages to AskHVO (askHVO@usgs.gov) request resources relating to geologic maps and geographic information systems (GIS) data. "Is there a map...

This week, many of us read news coverage of a recent study suggesting that unusually heavy rainfall triggered the 2018 eruption of Kīlauea. To address...

Mount St. Helens was exploding! The first eruption in the Cascades since 1914–1917 (Lassen Peak) started on March 27, 1980. April became a frenzied...

With heavy heart, the USGS Hawaiian Volcano Observatory (HVO) bids aloha to Janet Babb, outreach geologist and educator extraordinaire who retired...

Mauna Loa, the largest active volcano on Earth, has erupted, on average, every 5–6 years during the past 3,000 years.

The presence of water in Halema‘uma‘u has sparked an important discussion about what the pond means for future eruptions at Kīlauea Volcano. There are...

In the past, HVO would occasionally post images of people collecting lava samples on our website. These photos usually featured a person (with little...