News

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...

The USGS Hawaiian Volcano Observatory (HVO) is responsible for monitoring and studying one of the most active volcanic regions in the world. The...

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

Last week’s “Volcano Watch” summarized Kīlauea’s explosive eruptions of 1924 and their impacts on communities. This week, we dig a little deeper and...

Kīlauea began erupting explosively 100 years ago this week, for the first time in nearly a century. The eruption lasted for about 17 days, killing one...

This past week, earthquakes and inflation near Kīlauea’s summit prompted temporary closures within Hawaiʻi Volcanoes National Park. What is happening...

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...

At around 14,410-feet Mount Rainier, a snowcapped volcano in the Cascade Range, towers above the Puget Lowlands.  

HVO staff visited the KWcam site on April 18 to replace desiccant and dry out the enclosure. A new USGS Data Release publishes measurements of the...