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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

Scheduled website outage

Scheduled website outage

Volcano Minute — Volcano monitoring work in American Samoa: aloha to talofa

Volcano Minute — Volcano monitoring work in American Samoa: aloha to talofa

Volcano Watch — From aloha to talofa: USGS Hawaiian Volcano Observatory monitors American Samoa

Volcano Watch — From aloha to talofa: USGS Hawaiian Volcano Observatory monitors American Samoa

Multimedia

Color graphic with map on left side and two stacked photographs on the right
American Samoa volcano monitoring network
American Samoa volcano monitoring network
Color logo for a podcast about volcanic activity
Volcano Minute — Volcano monitoring work in American Samoa: aloha to talofa
Volcano Minute — Volcano monitoring work in American Samoa: aloha to talofa
Color map showing eruption at summit of volcano
September 23, 2026—New Kīlauea summit vents and lava flows, September 14–16
September 23, 2026—New Kīlauea summit vents and lava flows, September 14–16
Color photograph of volcanic vent degassing
September 18, 2026 — Aerial view of vents in Halemaʻumaʻu, Kīlauea summit
September 18, 2026 — Aerial view of vents in Halemaʻumaʻu, Kīlauea summit
Color photograph of volcanic vents in wall of crater
September 18, 2026 — Vents that recently erupted in the wall of Halemaʻumaʻu crater, Kīlauea
September 18, 2026 — Vents that recently erupted in the wall of Halemaʻumaʻu crater, Kīlauea
Color photograph of cooled lava flows
September 18, 2026 — Recent lava flows in Halemaʻumaʻu, Kīlauea
September 18, 2026 — Recent lava flows in Halemaʻumaʻu, Kīlauea
Color photograph of volcanic vents degassing
September 18, 2026 — Low-angle aerial view of volcanic vent complex in Halemaʻumaʻu, Kīlauea
September 18, 2026 — Low-angle aerial view of volcanic vent complex in Halemaʻumaʻu, Kīlauea
Color photograph of scientist collecting lava sample from crater floor
September 18, 2026 — Collecting cooled lava sample from Halemaʻumaʻu crater floor, Kīlauea
September 18, 2026 — Collecting cooled lava sample from Halemaʻumaʻu crater floor, Kīlauea
Color photograph of volcanic vent
September 18, 2026 — Aerial view into the north vent in Halemaʻumaʻu, Kīlauea
September 18, 2026 — Aerial view into the north vent in Halemaʻumaʻu, Kīlauea
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