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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 and Video Chronology — Annual Mauna Loa GPS campaign underway

Photo and Video Chronology — Annual Mauna Loa GPS campaign underway

Volcano Watch — A fresh look at Kīlauea’s 1924 explosive deposits

Volcano Watch — A fresh look at Kīlauea’s 1924 explosive deposits

Programs commemorating centennial anniversary of Kīlauea's 1924 explosive eruption

Programs commemorating centennial anniversary of Kīlauea's 1924 explosive eruption

Multimedia

Black and white photograph of explosive eruption with text over it 100 years ago at Kīlauea: The 1924 explosive eruption described by Thomas Jaggar
100 years ago at Kīlauea: The 1924 explosive eruption described by Thomas Jaggar
Color photograph of tripod with GPS on lava flow and cabin in the background
May 13, 2024 — Annual Mauna Loa GPS campaign underway
May 13, 2024 — Annual Mauna Loa GPS campaign underway
Color photograph of yellow tripods and boxes organized on pavement
May 13, 2024 — Annual Mauna Loa GPS campaign underway
May 13, 2024 — Annual Mauna Loa GPS campaign underway
Color photograph of tripod with GPS on it on lava flow with helicopter in the background
May 13, 2024 — Annual Mauna Loa GPS campaign underway
May 13, 2024 — Annual Mauna Loa GPS campaign underway
Color photograph of GPS on tripod on lava flow with mountains in the background
May 13, 2024 — Annual Mauna Loa GPS campaign underway
May 13, 2024 — Annual Mauna Loa GPS campaign underway
Color photograph of inactive volcanic vent and lava flows at base of crater
May 10, 2024 — Features from the June 2023 eruption at the summit of Kīlauea
May 10, 2024 — Features from the June 2023 eruption at the summit of Kīlauea
Color photograph of scientists conducting maintenance on camera
May 10, 2024 — Maintenance on Kīlauea summit thermal camera
May 10, 2024 — Maintenance on Kīlauea summit thermal camera
Color photograph of crater at the summit of a volcano
May 10, 2024 — Halema‘uma‘u, at the summit of Kīlauea
May 10, 2024 — Halema‘uma‘u, at the summit of Kīlauea
Color photograph of scientist measuring gravity on volcano
May 8, 2024 — Kīlauea gravity survey
May 8, 2024 — Kīlauea gravity survey