News

Kīlauea has erupted three times in 2023—January–March, June, and September—and has also experienced significant intrusive activity to the southwest of...

Volcanoes are a part of life for Hawaii residents. We live on the flanks, feeling earthquakes beneath our feet, smelling vog, and experiencing the...

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...

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

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...

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...

Though volcanoes like Mount Shasta or Lassen Peak may dominate their skylines, California also has shield volcanoes, named because their shape is...