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Hawaiian Volcano Observatory

Find U.S. Volcano

HVO monitors earthquakes and the active volcanoes in Hawaii, assesses their hazards, issues warnings, and advances scientific understanding to reduce the impacts of volcanic eruptions. Communicating the results of our work to the public, emergency managers, and the scientific community is an important aspect of the HVO mission. 

Active Volcanoes in Hawaii

Very High Threat Potential
Kīlauea
Mauna Loa
High Threat Potential
Hualālai
Moderate Threat Potential
Haleakalā
Mauna Kea
Not Ranked
Kama‘ehuakanaloa (Lō‘ihi Seamount)
View the threat rankings of US Volcanoes

News

New USGS data release on Kīlauea lava fountain heights

New USGS data release on Kīlauea lava fountain heights

Volcano Minute — A Quiet Eruption Beneath the Pacific

Volcano Minute — A Quiet Eruption Beneath the Pacific

Volcano Watch — Ruby seamount: A glimpse into the secret life of a submarine volcano

Volcano Watch — Ruby seamount: A glimpse into the secret life of a submarine volcano

Multimedia

Color photograph of lava flow erupted on sea floor
Volcano Minute — A Quiet Eruption Beneath the Pacific
Volcano Minute — A Quiet Eruption Beneath the Pacific
Color logo for weekly audio update on volcanic activity in Hawaii
Volcano Minute — Patterns of eruptions and intrusions at Kīlauea
Volcano Minute — Patterns of eruptions and intrusions at Kīlauea
A brown hill of volcanic tephra with a crack and yellow and orange areas of alteration
October 22, 2026—Tephra hill during helicopter overflight of Halema‘uma‘u
October 22, 2026—Tephra hill during helicopter overflight of Halema‘uma‘u
Helicopter landed on black lava flows for scientists to collect samples
October 22, 2026—Helicopter landing site in Halema‘uma‘u
October 22, 2026—Helicopter landing site in Halema‘uma‘u
A scientist picking up pieces of lava from a lava flow surface
October 22, 2026—Lava sampling of Halema‘uma‘u crater floor
October 22, 2026—Lava sampling of Halema‘uma‘u crater floor
Black and light gray lava flows cover a volcanic crater floor
October 22, 2026—Helicopter overflight of Halema‘uma‘u
October 22, 2026—Helicopter overflight of Halema‘uma‘u
White volcanic gas plume being emitted from vents
October 22, 2026—Helicopter overflight of Halema‘uma‘u
October 22, 2026—Helicopter overflight of Halema‘uma‘u
Volcanic vent emitting a thick white volcanic gas plume
October 22, 2026—Helicopter overflight of Halema‘uma‘u
October 22, 2026—Helicopter overflight of Halema‘uma‘u
Close-up image of a volcanic vent with red lava surface far below the vent rim
October 22, 2026—Helicopter overflight of Halema‘uma‘u
October 22, 2026—Helicopter overflight of Halema‘uma‘u
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