News

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...

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...

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

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

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...

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

On April 24, HVO staff installed a new webcam and upgraded an existing webcam on the Southwest Rift Zone of Mauna Loa. 

The production of maps to track the progress of ongoing eruptions has long been part of the USGS Hawaiian Volcano Observatory (HVO) mission to inform...

The Island of Hawai‘i is one of the most seismically active regions in the world. In the last five years, an average of 600-1200 earthquakes per week...

The 2022 eruption of Mauna Loa occurred late in the evening of November 27th. The eruption was preceded by intense earthquake activity about half an...