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Hawaiian Volcano Observatory's mission
HVO monitors the active volcanoes in Hawaii, assesses their hazards, issues warnings, and advances scientific understanding to reduce impacts of volcanic eruptions.

New USGS publication: Lava inundation zone maps for Mauna Loa, Island of Hawai‘i, Hawaii
October 27, 2017

Lava flows from Mauna Loa volcano, on the Island of Hawai‘i, constitute a significant hazard to people and property. This report addresses those lava flow hazards, mapping 18 potential lava inundation zones on the island.

Published as USGS Scientific Investigations Map 3387, it is now available online, and includes an index map (shown here), nine inundation zone maps, and a pamphlet that provides guidance on how to interpret the maps.

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New UGSS Video: Kīlauea Summit Eruption | Lava Returns to Halema‘uma‘u
October 11, 2017

This 24-minute USGS video recounts the eruptive history of Halema‘uma‘u and tells the story of

Kīlauea Volcano's current summit eruption, from its start in 2008 through today. It begins with a Hawaiian chant that expresses traditional observations of an active lava lake, and describes the formation and continued growth of the summit vent and lava lake. USGS-Hawaiian Volcano Observatory scientists share their insights on the eruption—how they monitor the lava lake, how and why the lake level rises and falls, why explosive events occur, the connection between Kīlauea's ongoing summit and East Rift Zone eruptions, and the impacts of the summit eruption on the Island of Hawai‘i and beyond.

The new video documentary is published as USGS General Interest Publication 182, and is available on the USGS Youtube channel.

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Very High Threat Potential ¹
Kīlauea
Mauna Loa
High Threat Potential ¹
Hualālai
Moderate Threat Potential ¹
Haleakalā
Mauna Kea
Not Ranked ¹
Lō‘ihi

^{1. View the threat rankings of US Volcanoes.}