Volcano Watch

During the most active portion of their life cycle, called the shield stage, Hawaiian volcanoes erupt frequently and mostly produce a rock type called...

Over the past few years, eruptions of Kīlauea volcano on the Island of Hawai‘i have happened in remote regions and lava flows have not directly...

Kīlauea began erupting from fissures southwest of Kaluapele (the summit caldera) just after midnight on June 3; the eruption ceased just nine hours...

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...

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...

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...

Earth’s magnetic field surrounds us every second of the day, everywhere on the planet. Anyone who has picked up a pocket compass and seen the magnetic...

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...

STEM is an acronym that stands for Science, Technology, Engineering and Mathematics. In the educational system, encouraging STEM curriculum prepares...

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...

In 2012, steam began to rise from beneath the cracked concrete of a telecommunication station at the summit of Pico Basile volcano on Bioko Island...

On the Island of Hawaiʻi, frequent eruptions foster a close relationship between the USGS Hawaiian Volcano Observatory (HVO) and the Hawaiʻi County...

In February, the volcanological community gathered for the 12th edition of Cities on Volcanoes (COV12), a conference of the International Association...

From January 31 to February 3, 2024, a magma intrusion into Kīlauea’s flank, southwest of the summit caldera, was the focus of attention at the USGS...

February is Mahina ʻŌlelo Hawaiʻi, Hawaiian Language Month, and an opportunity to appreciate the value that the Native Hawaiian language has provided...

The USGS Hawaiian Volcano Observatory (HVO) “lavas” working with our partners at the University of Hawai‘i at Hilo (UHH), and for Valentine’s Day we...

Last week, USGS Hawaiian Volcano Observatory (HVO) scientists were closely monitoring earthquakes and ground deformation in the region southwest of...