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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

New Kīlauea summit eruption tephra map

New Kīlauea summit eruption tephra map

Volcano Minute — It’s National Preparedness Month, what can you do to prepare?

Volcano Minute — It’s National Preparedness Month, what can you do to prepare?

Volcano Watch — September is National Preparedness Month

Volcano Watch — September is National Preparedness Month

Multimedia

Color logo for a podcast about volcanic activity
Volcano Minute — It’s National Preparedness Month, what can you do to prepare?
Volcano Minute — It’s National Preparedness Month, what can you do to prepare?
Color maps showing the thickness of a volcanic deposit
September 3, 2026—Kīlauea summit eruption tephra thickness through episode 52
September 3, 2026—Kīlauea summit eruption tephra thickness through episode 52
Color photograph of scientists collecting sample on crater floor
August 28, 2026 — USGS staff sampling episode 54 lava flow, Kīlauea summit
August 28, 2026 — USGS staff sampling episode 54 lava flow, Kīlauea summit
Color photograph of volcanic vents
August 28, 2026 — View of the north, south, and west vents after episode 54, Kīlauea summit
August 28, 2026 — View of the north, south, and west vents after episode 54, Kīlauea summit
Color photograph of volcanic vents degassing
August 28, 2026 — Aerial view of the north, south, and west vents, Kīlauea summit
August 28, 2026 — Aerial view of the north, south, and west vents, Kīlauea summit
Color photograph of scientists fixing volcano monitoring station
August 27, 2026 — USGS staff repair monitoring equipment at Kīlauea summit
August 27, 2026 — USGS staff repair monitoring equipment at Kīlauea summit
Color photograph of scientists sampling vertical exposure of explosive volcanic deposit
Volcano Minute — Scientists sample layers of Kīlauea’s past
Volcano Minute — Scientists sample layers of Kīlauea’s past
Color photograph of volcano monitoring station
August 27, 2026 — Monitoring equipment at Kīlauea summit
August 27, 2026 — Monitoring equipment at Kīlauea summit
Color photograph of scientists fixing volcano monitoring equipment
August 27, 2026 — USGS staff repair monitoring equipment at Kīlauea summit
August 27, 2026 — USGS staff repair monitoring equipment at Kīlauea summit
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