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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 — What sounds the (automated) alarms at HVO?

Volcano Watch — What sounds the (automated) alarms at HVO?

Volcano Watch — Quantifying corrosion downwind of Kīlauea

Volcano Watch — Quantifying corrosion downwind of Kīlauea

Volcano Watch — ʻAilāʻau or Kualoloa? Hawaiian chants suggest lava flow name change

Volcano Watch — ʻAilāʻau or Kualoloa? Hawaiian chants suggest lava flow name change

Multimedia

Color plots showing infrasound data
Example plots of STA/LTA alarm on infrasound data for four possible alarm scenarios
Example plots of STA/LTA alarm on infrasound data for four possible alarm scenarios
Color map of lava flows
Map showing Kualoloa lava flows originating near the summit of Kīlauea
Map showing Kualoloa lava flows originating near the summit of Kīlauea
Color photograph of scientist examining equipment that has been knocked over by wind
November 7, 2024 — Getting webcams back online at Mauna Loa summit
November 7, 2024 — Getting webcams back online at Mauna Loa summit
Color photograph of scientist working on instrumentation with volcano in the background
November 7, 2024 — Getting webcams back online at Mauna Loa summit
November 7, 2024 — Getting webcams back online at Mauna Loa summit
Color photograph of instrumentation on a volcano, with a volcano in the background
November 7, 2024 — Getting webcams back online at Mauna Loa summit
November 7, 2024 — Getting webcams back online at Mauna Loa summit
Color graphic showing two geologic maps side by side
Examples of Hawaii geologic maps
Examples of Hawaii geologic maps
Color photograph of the rim of a crater filled with steam
October 23, 2024 — South rim of Pu‘u‘ō‘ō on the middle East Rift Zone of Kīlauea
October 23, 2024 — South rim of Pu‘u‘ō‘ō on the middle East Rift Zone of Kīlauea
Color photograph of webcam on tripod located on an inactive lava flow field
October 23, 2024 — Routine maintenance on Kīlauea East Rift Zone webcam
October 23, 2024 — Routine maintenance on Kīlauea East Rift Zone webcam
Color photograph of USGS scientist examining webcam
October 23, 2024 — Routine maintenance on Kīlauea East Rift Zone webcam
October 23, 2024 — Routine maintenance on Kīlauea East Rift Zone webcam
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