Volcano Watch

It’s official! Governor Green recently proclaimed that April is again Tsunami Awareness Month for the State of Hawaii. This is not to be confused with...

The 1980 Mount St. Helens eruption in Washington State illustrated the hazards and impacts of lateral (ground-hugging) volcanic blasts on natural...

Shiny and elusive, featherlight and golden-brown. If poets were to write about rocks, I’m sure they would sing their praises of Pele’s hairs. Don’t be...

Scientists from the USGS Hawaiian Volcano Observatory (HVO) are collaborating with academic colleagues to make field experiences in geology more...

The U.S. Geological Survey (USGS) will host an informal open house on March 15th about the proposed new building in Hilo and draft Environmental...

Understanding volcanic eruptions requires learning about where the erupted lavas come from deep within the volcano. But how do scientists get...

Over the past two decades, both scientists and members of the public have anticipated the occurrence of slow slip events (SSEs) on Kīlauea’s south...

Mauna Loa’s recent eruption is still fresh in the minds of Hawaiian Volcano Observatory (HVO) scientists and Island of Hawai‘i residents. Now is a...

When Mauna Loa erupted in November 2022 for the first time in nearly forty years, one of the main concerns was the lava and where it would flow. But...

This new year is the final year of Kīlauea volcano projects funded by the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R...

Measurements of gravity can be used to determine how mass is distributed beneath a volcano. Microgravity surveys can measure changes in the subsurface...

Newberry Volcano is one of the largest and most hazardous active volcanoes in the United States. It is designated a “very high threat” volcano in a...

Pāhala, a town located in the southeast part of the Island of Hawai‘i, lies above the state’s most seismically active area. In the last 5 years, the...

Real-time views of an eruption site are a vital source of information for emergency managers, so webcams are one of the most important tools in an...

What is a volcanologist, exactly? The short answer is a volcanologist is a person who studies volcanoes, but that’s not the whole story. There are as...

Seismology is one of several critical elements used at the Hawaiian Volcano Observatory (HVO) to assess volcanic unrest and hazards. Often, the...

This January, the USGS Hawaiian Volcano Observatory (HVO) will partner with the University of Hawai‘i at Hilo, Hawai‘i Volcanoes National Park Service...

The first few hours of Mauna Loa’s eruption were dynamic, and volcanologists intently watched monitoring data to track changing conditions and...

At 10:45 p.m. Sunday evening, November 27, USGS Hawaiian Volcano Observatory (HVO) scientists were alerted to an earthquake swarm beneath Mauna Loa...

The U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) sets the Volcano Alert Level and Aviation Color Code for volcanoes in Hawaii and...