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Volcano Hazards Program

Find U.S. Volcano

There are about 170 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 through our National Volcano Early Warning System. We deliver forecasts, warnings, and information about volcano hazards based on a scientific understanding of volcanic behavior.

News

Volcano Watch — The pressure is on, within Kīlauea and for volcanologists to foretell what's next

Volcano Watch — The pressure is on, within Kīlauea and for volcanologists to foretell what's next

USGS-USAID Volcano Disaster Assistance Program honored with American Geophysical Union 2024 International Award

USGS-USAID Volcano Disaster Assistance Program honored with American Geophysical Union 2024 International Award

Photo and Video Chronology — January 2, 2025 — Vigorous lava fountaining continues at Kīlauea summit

Photo and Video Chronology — January 2, 2025 — Vigorous lava fountaining continues at Kīlauea summit

Publications

Physicochemical properties and bioreactivity of sub-10 µm geogenic particles: Comparison of volcanic ash and desert dust

Exposure to ambient particulate matter (PM) with an aerodynamic diameter of
Authors
Ines Tomašek, Julia Eychenne, David Damby, Adrian Hornby, Manolis N Romanias, Severine Moune, Gaëlle Uzu, Federica Schiavi, Maeva Dole, Emmanuel Gardes, Mickael Laumonier, Clara Gorce, Regine Minet-Quinard, Julie Durif, Corinne Belville, Ousmane Traore, Loic Blanchon, Vincent Sapin

The progression of basaltic–rhyolitic melt storage at Yellowstone Caldera

Yellowstone Caldera is one of the largest volcanic systems on Earth, hosting three major caldera-forming eruptions in the past two million years, interspersed with periods of less explosive, smaller-volume eruptions1. Caldera-forming eruptions at Yellowstone are sourced by rhyolitic melts stored within the mid- to upper crust. Seismic tomography studies have suggested that a broad region...
Authors
Ninfa Lucia Bennington, Adam Schultz, Paul A. Bedrosian, Esteban Bowles-Martinez, Kendra J. Lynn, Mark E. Stelten, Xiaolei Tu, Clifford Thurber

Seismic velocity changes from repetitive seismicity at Mauna Loa prior to and during its 2022 eruption

Mauna Loa’s short-lived eruption from late November to early December 2022 marked the culmination of nearly a decade of elevated seismic activity and geodetic inflation. The volcano has been monitored by a network of permanent, short period and broadband seismometers. I used the continuous waveform data from that network starting in 2012 to generate a catalog of seismicity that enhances...
Authors
Alicia J. Hotovec-Ellis
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