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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

Volcano Watch — Tilt, Tremor, and Lava: Remembering Mauna Loa’s 2022 Eruption Onset

Volcano Watch — Tilt, Tremor, and Lava: Remembering Mauna Loa’s 2022 Eruption Onset

Photo & Video Chronology — April 20-23, 2025 — Kīlauea eruption episode 18

Photo & Video Chronology — April 20-23, 2025 — Kīlauea eruption episode 18

Photo & Video Chronology — April 18, 2025 — New Kīlauea summit interferogram and UAS mission photos

Photo & Video Chronology — April 18, 2025 — New Kīlauea summit interferogram and UAS mission photos

Multimedia

Color map showing ground deformation and outline of a lava flow
Interferometric Synthetic Aperture Radar (InSAR) image of Mauna Loa spanning November 16 to December 2, 2022
Interferometric Synthetic Aperture Radar (InSAR) image of Mauna Loa spanning November 16 to December 2, 2022
Color photograph of gassy vent
April 23, 2025 — Steamy view of vents a day after episode 18 at Kīlauea's summit
April 23, 2025 — Steamy view of vents a day after episode 18 at Kīlauea's summit
Color photograph of material on gated road
April 23, 2025 — Tephra fall covering road near Uēkahuna at Kīlauea's summit
April 23, 2025 — Tephra fall covering road near Uēkahuna at Kīlauea's summit
Color photograph of volcanic vent erupting lava April 22, 2025 — Kīlauea Episode 18 Lava Fountaining Video
April 22, 2025 — Kīlauea Episode 18 Lava Fountaining Video
Color photograph of lava fountaining from vent
April 22, 2025 — Kīlauea eruptive episode 18 in Halema‘uma‘u
April 22, 2025 — Kīlauea eruptive episode 18 in Halema‘uma‘u
Color photograph of scientist sampling lava
April 22, 2025 — Sampling Kīlauea lava
April 22, 2025 — Sampling Kīlauea lava
Color photograph of lava fountain
April 22, 2025 — Episode 18 at the summit of Kīlauea
April 22, 2025 — Episode 18 at the summit of Kīlauea
Color photograph of volcanic vent erupting lava
April 22, 2025 — Episode 18 at the summit of Kīlauea
April 22, 2025 — Episode 18 at the summit of Kīlauea
Color photo of lava fountain and stream leaving volcanic vent
April 22, 2025 — Kīlauea summit eruption episode 18
April 22, 2025 — Kīlauea summit eruption episode 18
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