News

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Date published: September 9, 2019

Photo and Video Chronology - Mauna Loa - September 8, 2019

An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim.

Date published: July 25, 2019

Volcano Watch - Mauna Loa Volcano's 1935 lava flow seen in current media coverage of Mauna Kea

In ongoing media coverage of demonstrations at the base of Mauna Kea, many hundreds of people can be seen standing on a black lava flow that surrounds the Pu‘uhuluhulu Native Tree...

Date published: July 19, 2019

Photo and Video Chronology - Mauna Loa - July 10, 2019

Video shows Moku‘āweoweo, the caldera at the summit of Mauna Loa, during a routine overflight. 

Date published: July 12, 2019

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".

Date published: July 11, 2019

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.m., USGS Hawaiian Volcano Observatory (HVO) staff rushed to their offices, where, at 11:42 p.m., they noted red glow above the mountain. The 1975 eruption lasted less than a day, but it ended Mauna Loa's then longest-known repose period. 

Date published: 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. 

Date published: April 24, 2019

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

Routine visit to Mauna Loa summit.

Date published: April 12, 2019

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

HVO scientists inspect monitoring instruments on Mauna Loa. 

Date published: April 10, 2019

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.

Date published: April 10, 2019

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 

Date published: March 27, 2019

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

GPS station on Mauna Loa.

Date published: February 22, 2019

How to stay informed about Hawaiian volcanoes

Information about how to stay informed about Hawaiian volcanoes.