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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 Minute — What can chemistry tell us about lava fountain heights?

Volcano Minute — What can chemistry tell us about lava fountain heights?

Volcano Watch — Will Kīlauea summit lava fountains get taller? Time and chemistry will tell!

Volcano Watch — Will Kīlauea summit lava fountains get taller? Time and chemistry will tell!

Photo & Video Chronology — Maintaining volcano monitoring instrumentation

Photo & Video Chronology — Maintaining volcano monitoring instrumentation

Multimedia

Black and white annotated images of minerals
Olivine grains erupted at the summit of Kīlauea
Olivine grains erupted at the summit of Kīlauea
Color graphic showing lava fountain heights and lava chemistry over time
Kīlauea summit lava fountain heights and chemistry over time
Kīlauea summit lava fountain heights and chemistry over time
Color logo for weekly audio update on volcanic activity in Hawaii
Volcano Minute — What can chemistry tell us about lava fountain heights?
Volcano Minute — What can chemistry tell us about lava fountain heights?
Color photograph of person presenting to an audience in a gymnasium
Volcano Minute — Aloha to Hawaii County Civil Defense Administrator
Volcano Minute — Aloha to Hawaii County Civil Defense Administrator
Color photograph of volcanic vent with sulfur deposits surrounding it
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
Color photograph of instrumentation
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
Color photograph of volcanic crater
July 29, 2026—Kīlauea Iki and East Rift Zone
July 29, 2026—Kīlauea Iki and East Rift Zone
Color photograph of crater at summit of volcano with degassing plume from active vents
July 29, 2026—Overview of Halema‘uma‘u
July 29, 2026—Overview of Halema‘uma‘u
Color photograph of volcanic degassing area with monitoring instrumentation
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
July 29, 2026 — Sulfur Cone gas monitoring maintenance, Mauna Loa
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