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ORANGE WATCH, 2018-02-23 18:54:25 UTC

Mauna Loa
YELLOW ADVISORY, 2018-02-22 19:29:40 UTC

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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.

HVO News  (archive)
Active Volcanoes in Hawaii1

New USGS fact sheet provides information on volcanic air pollution in Hawaii.
February 01, 2018

Volcanic Air Pollution Hazards in Hawaii is an updated fact sheet that provides information on the science of Kīlauea's volcanic air pollution, known as "vog." It also addresses impacts to human health, agriculture, infrastructure, and the environment, and guides readers to relevant resources for living with vog.

Noxious sulfur dioxide gas and other air pollutants emitted from Kīlauea Volcano on the Island of Hawai‘i react with oxygen, atmospheric moisture, and sunlight to produce volcanic smog (vog) and acid rain. U.S. Geological Survey scientists, along with health professionals and local government officials are working together to better understand vog and to enhance public awareness of this hazard.

New USGS Video: Kīlauea Summit Eruption | Lava Returns to Halema‘uma‘u
January 31, 2018

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.

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.

Very High Threat Potential 1
Mauna Loa
High Threat Potential 1
Moderate Threat Potential 1
Mauna Kea
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1. View the threat rankings of US Volcanoes.