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News about Mauna Loa.

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Volcano Alert Level for Mauna Loa raised to "Advisory"

Volcano Alert Level for Mauna Loa raised to "Advisory"

On July 2, HVO raised the Volcano Alert Level for Mauna Loa from "Normal" to "Advisory".

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Volcano Watch — Mauna Loa's 1975 eruption in terms of today's Volcano Alert Level

Volcano Watch — Mauna Loa's 1975 eruption in terms of today's Volcano Alert Level

Shortly before midnight on July 5, 1975, Mauna Loa Volcano awakened with a shudder. Quickly responding to a seismic earthquake/tremor alarm at 11:18 p...

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Photo and Video Chronology - Mauna Loa - April 29, 2019

Photo and Video Chronology - Mauna Loa - April 29, 2019

This timelapse sequence of webcam images over a 24-hour period shows a typical day at the summit of Mauna Loa. 

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Photo and Video Chronology - Mauna Loa - April 24, 2019

Photo and Video Chronology - Mauna Loa - April 24, 2019

Routine visit to Mauna Loa summit.

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Photo and Video Chronology - Mauna Loa - April 12, 2019

Photo and Video Chronology - Mauna Loa - April 12, 2019

HVO scientists inspect monitoring instruments on Mauna Loa. 

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Updates on Kīlauea, Mauna Loa, and HVO's future

Updates on Kīlauea, Mauna Loa, and HVO's future

HVO Scientist-in-Charge Tina Neal talked about the status of Kīlauea and Mauna Loa volcanoes.

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Geologic map of the central-southeast flank of Mauna Loa volcano, Island of Hawaiʻi, Hawaiʻi

Geologic map of the central-southeast flank of Mauna Loa volcano, Island of Hawaiʻi, Hawaiʻi

Geologic map of the central-southeast flank of Mauna Loa volcano, Island of Hawaiʻi, Hawaiʻi: USGS Scientific Investigations Map 2932–B 

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Photo and Video Chronology - Mauna Loa - March 27, 2019

Photo and Video Chronology - Mauna Loa - March 27, 2019

GPS station on Mauna Loa.

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How to stay informed about Hawaiian volcanoes

How to stay informed about Hawaiian volcanoes

Information about how to stay informed about Hawaiian volcanoes.

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Volcano Awareness Month

Volcano Awareness Month

January 2019 is Hawaiʻi Island's 10th annual Volcano Awareness Month.

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Volcano Watch - Why do some Hawaii earthquakes occur so far offshore?

Volcano Watch - Why do some Hawaii earthquakes occur so far offshore?

Earthquakes in Hawaii are intimately related to the volcanoes. In addition to helping scientists track moving magma, sometimes they happen simply...

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Update on January 2019 Volcano Awareness Month Presentations

Update on January 2019 Volcano Awareness Month Presentations

Due to the lapse in appropriations, USGS Hawaiian Volcano Observatory scientists are unable to present public lectures as planned.

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