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News about Mauna Loa.

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New HVO webcam: [MKcam] Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea

New HVO webcam: [MKcam] Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea

A new USGS Hawaiian Volcano Observatory webcam provides views of Mauna Loa’s summit and Northeast Rift Zone. The webcam view is to the south from its...

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Volcano Watch — New research sheds light on recent Pāhala earthquake swarms

Volcano Watch — New research sheds light on recent Pāhala earthquake swarms

Many people in Kaʻū have noticed the swarm of earthquakes taking place during the past few years. These earthquakes are happening in a zone that is 29...

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Photo and Video Chronology – Mauna Loa – May 18, 2021

Photo and Video Chronology – Mauna Loa – May 18, 2021

May 15, 2021 — Mauna Loa
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Volcano Watch — Tiny changes at Mauna Loa’s summit hold big clues

Volcano Watch — Tiny changes at Mauna Loa’s summit hold big clues

Although Mauna Loa is Earth’s largest active volcano, it has lived in the shadow of Kīlauea since it last erupted in 1984.  The geologic record shows...

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Volcano Watch — How measuring gravity on Mauna Kea helps us monitor Mauna Loa

Volcano Watch — How measuring gravity on Mauna Kea helps us monitor Mauna Loa

Gravimeters, essentially extremely precise pendulums, can measure a change in the force of gravity to one-in-one billionth of the force you feel every...

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Photo and Video Chronology – Mauna Loa – April 9, 2021

Photo and Video Chronology – Mauna Loa – April 9, 2021

Mauna Loa summit interferogram
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USGS HVO Information Statement — Magnitude-4.3 earthquake beneath Mauna Loa’s south flank

USGS HVO Information Statement — Magnitude-4.3 earthquake beneath Mauna Loa’s south flank

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.3 earthquake located beneath Mauna Loa's south flank on...

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USGS HVO Information Statement — Earthquake swarm on Mauna Loa Volcano's northwest flank

USGS HVO Information Statement — Earthquake swarm on Mauna Loa Volcano's northwest flank

A swarm of earthquakes, that began on March 29, 2021, at 2:30 a.m. HST is occurring beneath the northwest flank of Mauna Loa. Mauna Loa is not...

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Volcano Watch — Aerial photographs and volcanic ash: Looking back to move forward

Volcano Watch — Aerial photographs and volcanic ash: Looking back to move forward

A new project at the USGS Hawaiian Volcano Observatory (HVO) is once again making use of old aerial photographs and field notes that were used to make...

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USGS HVO Information Statement — Small earthquake swarm on Mauna Loa Volcano's southeast flank

USGS HVO Information Statement — Small earthquake swarm on Mauna Loa Volcano's southeast flank

Mauna Loa Volcano is not erupting. A small swarm of shallow seismicity, that began at 1:00 a.m. HST this morning, is occurring beneath the upper Ka...

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Volcano Watch — “By failing to prepare, you are preparing to fail.” – Benjamin Franklin

Volcano Watch — “By failing to prepare, you are preparing to fail.” – Benjamin Franklin

Mauna Loa has been in the news lately, as the volcano continues to awaken from its slumber. While an eruption of Mauna Loa is not imminent, now is the...

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USGS HVO Information Statement — Magnitude-4.2 earthquake beneath Mauna Loa’s southeast flank

USGS HVO Information Statement — Magnitude-4.2 earthquake beneath Mauna Loa’s southeast flank

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake located beneath Mauna Loa's southeast flank on...

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