News

January is Volcano Awareness Month on the Island of Hawai‘i! HVO, in cooperation with Hawai‘i Volcanoes National Park, the University of Hawai‘i at...

On Monday, December 4, at 5:54 p.m. HST, a magnitude-5.1 earthquake occurred at Kīlauea volcano, at a depth of 1 mi (2 km) below sea level. 

Twenty-five years ago, the frequently explosive activity of Kīlauea was unappreciated. Since then, continuing research has emphasized Kīlauea’s past...

For months, USGS monitoring had shown that Mauna Loa was inching close to an eruption. Just before midnight on Sunday, November 27, 2022, the wait was...

Active volcanoes are inherently hazardous places to work. Even when a volcano is quiet, volcanic gases, ground cracks, earthquakes, and uneven...

During volcanic crises, the USGS Hawaiian Volcano Observatory (HVO) plays a pivotal role, sharing information on activity and associated hazards with...

It’s hard to believe that nearly one year has passed since Mauna Loa erupted. Mauna Loa has been mostly quiet since the end of the 2022 eruption, but...

Hawaiian Volcano Observatory (HVO) geophysicists completed the annual GPS survey of Kīlauea in October 2023. On November 8, 2023, HVO staff fixed the...

For over thirty years, high-precision GPS (Global Positioning System) measurements have been a key tool used by the USGS Hawaiian Volcano Observatory...

The most recent eruption at Kīlauea’s summit began on Sunday, September 10, 2023. Following weeks of heightened unrest, fissures opened on the Halema...