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Flows heading north of Pu‘u ‘Ō‘ō, continued activity in Pu‘u ‘Ō‘ō crater and on Peace Day flow.

There are times when the USGS motto, "Science for a Changing World," seems to be specifically crafted to describe studies at Hawaiian volcanoes.

Most of us feel fortunate if we never go near a dangerous battlefield. Yet, dozens, if not hundreds, of people are knowingly—or unwittingly—doing just...

Some volcanic eruptions have a much higher overall impact on society than others.

Satellite image shows active breakouts on flow field.

Do you, like most people, think that eruptions in Hawaii are confined to the Island of Hawai‘i? If so, you may be surprised to learn that Haleakalā...

Lava continues to enter the ocean at Kupapa`u Point.

At the Hawaiian Volcano Observatory (HVO), we continuously strive to improve our capability to monitor the volcanoes that we live upon.

Kahauale‘a flow front stalls, new overflow in Pu‘u ‘Ō‘ō.

Sometimes a geologic study resembles a crime scene investigation (CSI), as seen on TV. You piece together information from eyewitnesses and compare it...