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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 — Snowshoeing on Kīlauea? High fountain episodes pose new challenges to volcano monitoring

Volcano Watch — Snowshoeing on Kīlauea? High fountain episodes pose new challenges to volcano monitoring

Photo & Video Chronology — July 9, 2025 — Kīlauea Episode 28

Photo & Video Chronology — July 9, 2025 — Kīlauea Episode 28

Volcano Watch — So what on Earth (or at least on Kīlauea) is a “gas piston”?

Volcano Watch — So what on Earth (or at least on Kīlauea) is a “gas piston”?

Multimedia

Color photograph of scientist walking on new volcanic deposit July 10, 2025 — Video of conditions after eruptive episodes downwind of the summit of Kīlauea
July 10, 2025 — Video of conditions after eruptive episodes downwind of the summit of Kīlauea
Scientist uses power washer to spray off solar panels
July 10, 2025 — Cleaning off solar panels of monitoring equipment at the summit of Kīlauea
July 10, 2025 — Cleaning off solar panels of monitoring equipment at the summit of Kīlauea
Scientists work gather around a volcano monitoring station
July 10, 2025 — USGS field engineers service a volcano monitoring station at the summit of Kīlauea
July 10, 2025 — USGS field engineers service a volcano monitoring station at the summit of Kīlauea
Color photograph of scientist walking on new volcanic deposit
July 10, 2025 — Using snowshoes on Kīlauea
July 10, 2025 — Using snowshoes on Kīlauea
Color photograph of scientists setting up monitoring equipment next to lava fountain
July 9, 2025 – Scientists measure gas emissions during episode 28 of the Halema‘uma‘u Kīlauea summit eruption
July 9, 2025 – Scientists measure gas emissions during episode 28 of the Halema‘uma‘u Kīlauea summit eruption
Color photograph of lava fountain in crater
July 9, 2025 – Aerial view of episode 28 of Halema‘uma‘u Kīlauea summit eruption
July 9, 2025 – Aerial view of episode 28 of Halema‘uma‘u Kīlauea summit eruption
Color photograph of lava sample in a gloved hand
July 9, 2025 – A glassy lava bomb from lava fountaining episode 28 of the Halema‘uma‘u Kīlauea summit eruption
July 9, 2025 – A glassy lava bomb from lava fountaining episode 28 of the Halema‘uma‘u Kīlauea summit eruption
Color photograph of scientists on crater floor with lava fountain visible in the background
July 9, 2025 — Scientists sample episode 28 of the Halema‘uma‘u Kīlauea summit eruption
July 9, 2025 — Scientists sample episode 28 of the Halema‘uma‘u Kīlauea summit eruption
Color photograph of volcanic eruption July 9, 2025 — Video of episode 28 of the Halema‘uma‘u Kīlauea summit eruption
July 9, 2025 — Video of episode 28 of the Halema‘uma‘u Kīlauea summit eruption
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