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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 — Sulfur Cone gas monitoring maintenance on August 2, 2024

Photo and Video Chronology — Sulfur Cone gas monitoring maintenance on August 2, 2024

Volcano Watch — HVO bids farewell to its Uēkahuna location

Volcano Watch — HVO bids farewell to its Uēkahuna location

Photo and Video Chronology — Minor Cracking on Chain of Craters Road from Intrusion

Photo and Video Chronology — Minor Cracking on Chain of Craters Road from Intrusion

Multimedia

Photo of volcanic cone
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of scientist conducting maintenance on volcanic gas monitoring station
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of volcanic gas monitoring instrumentation
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of volcanic gas monitoring instrument
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of volcanic gas monitoring instrumentation
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of volcanic gas monitoring instrumentation
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color photograph of scientist conducting maintenance on volcanic gas monitoring station
August 2, 2024—Sulfur Cone gas monitoring maintenance
August 2, 2024—Sulfur Cone gas monitoring maintenance
Color map showing ground deformation and earthquakes at a volcano
July 25, 2024—Kīlauea upper East Rift Zone unrest
July 25, 2024—Kīlauea upper East Rift Zone unrest
Crack on a road
July 25, 2024 — Crack growth on Chain of Craters Road
July 25, 2024 — Crack growth on Chain of Craters Road