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Volcano Hazards

There are 161 potentially active volcanoes in the U.S. The mission of the USGS Volcano Hazards Program is to enhance public safety and minimize social and economic disruption from volcanic unrest and eruption. We accomplish this by delivering effective forecasts, warnings, and information about volcano hazards based on scientific understanding of volcanic processes.

News

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July 7: Hawaiian Volcano Observatory Community Meeting on Helicopter Survey Over Unpopulated Parts of Kīlauea

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Volcano Watch — Volcano scientists roam the streets in Heraklion, Greece

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Photo and Video Chronology – Kīlauea – June 29, 2022

Publications

Volcano and earthquake monitoring plan for the Yellowstone Caldera system, 2022–2032

Executive SummaryThe Yellowstone Volcano Observatory (YVO) is a consortium of nine Federal, State, and academic agencies that: (1) provides timely monitoring and hazards assessment of volcanic, hydrothermal, and earthquake activity in and around Yellowstone National Park, and (2) conducts research to develop new approaches to volcano monitoring and better understand volcanic activity in the Yellow

Damage assessment for the 2018 lower East Rift Zone lava flows of Kīlauea volcano, Hawaiʻi

Cataloguing damage and its correlation with hazard intensity is one of the key components needed to robustly assess future risk and plan for mitigation as it provides important empirical data. Damage assessments following volcanic eruptions have been conducted for buildings and other structures following hazards such as tephra fall, pyroclastic density currents, and lahars. However, there are rela

A look ahead to the next decade at US volcano observatories

Volcano monitoring, eruption response, and hazard assessment at volcanoes in the United States of America (US) fall under the mandate of five regional volcano observatories covering 161 active volcanoes. Working in a wide range of volcanic and geographic settings, US observatories must learn from and apply new knowledge and techniques to a great variety of scientific and hazard communication probl

Science

2019 Kīlauea Disaster Supplemental Funding: Gravity Monitoring

Through the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157), the USGS received Supplemental funding to support recovery and rebuilding activities in the wake of the 2018 Kīlauea volcano eruption. Supplemental funding will enable the USGS to conduct scientific investigations of the current state of Kīlauea to properly interpret the data from the monitoring...
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2019 Kīlauea Disaster Supplemental Funding: Gravity Monitoring

Through the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157), the USGS received Supplemental funding to support recovery and rebuilding activities in the wake of the 2018 Kīlauea volcano eruption. Supplemental funding will enable the USGS to conduct scientific investigations of the current state of Kīlauea to properly interpret the data from the monitoring...
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2019 Kīlauea Disaster Supplemental Funding: Scientific Investigations, Ash Deposits

Through the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157), the USGS received Supplemental funding to support recovery and rebuilding activities in the wake of the 2018 Kīlauea volcano eruption. Supplemental funding will enable the USGS to conduct scientific investigations of the current state of Kīlauea to properly interpret the data from the monitoring...
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2019 Kīlauea Disaster Supplemental Funding: Scientific Investigations, Ash Deposits

Through the Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157), the USGS received Supplemental funding to support recovery and rebuilding activities in the wake of the 2018 Kīlauea volcano eruption. Supplemental funding will enable the USGS to conduct scientific investigations of the current state of Kīlauea to properly interpret the data from the monitoring...
Learn More

Volcanoes Can Affect Climate

Volcanoes can impact climate change. During major explosive eruptions huge amounts of volcanic gas, aerosol droplets, and ash are injected into the stratosphere. Injected ash falls rapidly from the stratosphere -- most of it is removed within several days to weeks -- and has little impact on climate change. But volcanic gases like sulfur dioxide can cause global cooling, while volcanic carbon...
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Volcanoes Can Affect Climate

Volcanoes can impact climate change. During major explosive eruptions huge amounts of volcanic gas, aerosol droplets, and ash are injected into the stratosphere. Injected ash falls rapidly from the stratosphere -- most of it is removed within several days to weeks -- and has little impact on climate change. But volcanic gases like sulfur dioxide can cause global cooling, while volcanic carbon...
Learn More