News

May 2023 marks the 99th anniversary of a sequence of explosive eruptions from Kīlauea's summit that occurred over 16 days from May 11–27, 1924. During...

One of California's coastal volcanic fields, the Pinnacles volcanic field (or Pinnacles National Park) is an eroded collection of mostly rhyolite lava...

HVO scientists conducted a Kīlauea summit overflight on May 3, 2023. The Kīlauea Seismic Imaging Project continues, as more nodes are deployed in the...

Five years ago, volcanic activity at Kīlauea dramatically changed when magma intruded into the lower East Rift Zone (LERZ). What happened at Kīlauea...

HVO scientists conducted  Halema‘uma‘u fieldwork and a Kīlauea summit overflight on May 3, 2023. The Kīlauea Seismic Imaging Project continues, as...

The Hawaiian Volcano Observatory (HVO) was founded in 1912. Today, over 111 years later, HVO is one of five volcano observatories supported by the U.S...

Scale is very important to volcanologists - not just for photos, but when thinking about the relative size (or volume) of natural features.

You might envision a stratovolcano as one massive cone with a single summit crater. But in reality, volcanoes are complex constructions that may have...

On the morning of April 21, Hawaiian Volcano Observatory geologists visited the floor to document and sample deposits erupted by Kīlauea volcano...

The recent 2022 Mauna Loa eruption began just before midnight, at 11:21 p.m. on November 27.  The first caldera floor fissures were visible in webcams...