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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

Photo & Video Chronology — September 25, 2025 — Measuring tephra cone changes at Kīlauea summit after episode 33

Photo & Video Chronology — September 25, 2025 — Measuring tephra cone changes at Kīlauea summit after episode 33

Photo & Video Chronology — September 24, 2025 — Kīlauea

Photo & Video Chronology — September 24, 2025 — Kīlauea

Volcano Watch – Lava, Logs, and Loose Cows: The Wild Job of HVO’s Technicians

Volcano Watch – Lava, Logs, and Loose Cows: The Wild Job of HVO’s Technicians

Multimedia

Color photo of a USGS scientists from the back trying to work on a filed station, while a tan horse pushes on his shoulder.
August 2025 – Curious horse near a filed station
August 2025 – Curious horse near a filed station
Color photograph of volcanic landscape with tire tracks
September 25, 2025 — The closed portion of Crater Rim Drive Road at Kīlauea summit
September 25, 2025 — The closed portion of Crater Rim Drive Road at Kīlauea summit
Color photograph of scientist taking measurement on volcanic landscape
September 25, 2025 — Measuring changes in elevation across the new tephra cone at Kīlauea after episode 33
September 25, 2025 — Measuring changes in elevation across the new tephra cone at Kīlauea after episode 33
Color photograph of steaming volcanic crater
September 25, 2025 — Panorama view of Halema‘uma‘u, Kīlauea
September 25, 2025 — Panorama view of Halema‘uma‘u, Kīlauea
color photo looking down at cooled black lava and pale gray steam.
September 24, 2025 — North and south vents at the summit of Kīlauea
September 24, 2025 — North and south vents at the summit of Kīlauea
color photo looking down at what look like two small holes in the rock that are the north and south vents.
September 24, 2025 — North and south vents at Kīlauea volcano
September 24, 2025 — North and south vents at Kīlauea volcano
A scientists wearing and orange flight suit and a white flight helmet samples black, cooled lava.
September 24, 2025 — Sampling episode 33 lava in Halemaʻumaʻu at the summit of Kīlauea
September 24, 2025 — Sampling episode 33 lava in Halemaʻumaʻu at the summit of Kīlauea
color photo of a scientists working on a field site from a distance with the vents in the background.
September 24, 2025 — Scientist services monitoring station at Kīlauea volcano
September 24, 2025 — Scientist services monitoring station at Kīlauea volcano
color photo of the Kaluapele with the steaming vents in the distance.
September 24, 2025 — Overview of Kaluapele
September 24, 2025 — Overview of Kaluapele
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