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News about Mauna Loa.

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Volcano Watch — Tilt, Tremor, and Lava: Remembering Mauna Loa’s 2022 Eruption Onset

Volcano Watch — Tilt, Tremor, and Lava: Remembering Mauna Loa’s 2022 Eruption Onset

As people from around the world are captivated by episodic lava fountaining during the ongoing Kīlauea eruption in Halemaʻumaʻu, let’s use the current...

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Volcano Watch — Moving magma: What happens after a dike intrudes a rift zone?

Volcano Watch — Moving magma: What happens after a dike intrudes a rift zone?

When magma moves into the rift zone of a Hawaiian volcano, there is understandably a lot of excitement and apprehension.  How far will the magma go...

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Photo and Video Chronology — Getting webcams back online at Mauna Loa summit

Photo and Video Chronology — Getting webcams back online at Mauna Loa summit

Mauna Loa summit webcams have been down for several months due to wind damage at the radio telemetry site. On November 7, 2024, HVO staff visited the...

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Volcano Watch — The Art and Science of Geologic Mapping

Volcano Watch — The Art and Science of Geologic Mapping

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created...

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Updated USGS Publication, "Eruptions of Hawaiian Volcanoes—Past, Present, and Future"

Updated USGS Publication, "Eruptions of Hawaiian Volcanoes—Past, Present, and Future"

In this third edition of "Eruptions of Hawaiian Volcanoes—Past, Present, and Future," we include information about Kīlauea’s 2018 eruption in the...

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New USGS Data Release featuring Mauna Loa webcam imagery

New USGS Data Release featuring Mauna Loa webcam imagery

The 2022 eruption of Mauna Loa volcano, Island of Hawaiʻi, was the first eruption on the volcano since 1984, producing a 17 km lava flow that...

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Volcano Watch — Webcam upgrades keep a sharp eye on Hawaiian volcanoes

Volcano Watch — Webcam upgrades keep a sharp eye on Hawaiian volcanoes

Photography has been a crucial part of volcano monitoring in Hawaii going back to the start of the USGS Hawaiian Volcano Observatory (HVO). In 1911...

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New USGS Data Release — Mauna Loa 2022 eruption geospatial data

New USGS Data Release — Mauna Loa 2022 eruption geospatial data

In the late evening of November 27, 2022, an effusive eruption began inside Moku'aweoweo caldera at the summit of Mauna Loa volcano. The eruption, the...

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Volcano Watch — Introducing the Island of Hawaiʻi Interagency Operations Plan for Volcanic Eruptions

Volcano Watch — Introducing the Island of Hawaiʻi Interagency Operations Plan for Volcanic Eruptions

Last month, the Hawaiʻi County Civil Defense Agency, Hawaiʻi Volcanoes National Park, and the U.S. Geological Survey (USGS) Hawaiian Volcano...

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Photo and Video Chronology — Sulfur Cone gas monitoring maintenance on August 2, 2024

Photo and Video Chronology — Sulfur Cone gas monitoring maintenance on August 2, 2024

On August 2,2024, Hawaiian Volcano Observatory gas scientists flew via helicopter to the Sulfur Cone Multi-Gas instrumentation site on Mauna Loa's...

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Volcano Watch — Beyond the lava: Mauna Loa’s deformation story

Volcano Watch — Beyond the lava: Mauna Loa’s deformation story

Mauna Loa volcano stands as the largest and most active volcano on Earth. With a rich history of eruptions that have shaped the Island of Hawaʻi's...

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Photo and Video Chronology — Annual Mauna Loa GPS campaign underway

Photo and Video Chronology — Annual Mauna Loa GPS campaign underway

HVO staff are conducting the annual Mauna Loa GPS campaign. During the survey, GPS instruments are deployed at established benchmarks so that their...

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