The U.S. Geological Survey’s Hawaiian Volcano Observatory said Episode 42 ended at about 11:38 p.m. Sunday after nine hours ...

Since late 2024, Klauea has unleashed 42 episodic fountaining events, each typically lasting a day or less, separated by ...

A week-and-a-half after Episode 41 of Kilauea’s yearlong summit eruption deposited tephra — lightweight volcanic glass debris ...

Many Hawaiʻi Island communities downwind from the eruptive vents in the southwest portion of Halemaʻumaʻu Crater inside the ...

Kilauea volcano in Hawaii begins Episode 42 of its summit eruption, with lava fountains confined to Halemaumau crater in ...

Peak fountain heights were at 1,300 ft. for the south vent and 1,000 ft. for the north vent, with the plume reaching 35,000 ...

When referred to as a gas, it means a volatile has transitioned into the vapor phase. The most common gases (or vapor phase volatiles) emitted at the surface are water (H2O), carbon dioxide (CO2), and ...

Kilauea has been erupting episodically within the summit caldera since Dec. 23, 2024. Its USGS Volcano Alert level is WATCH.

“Volcano Watch” articles over the past two weeks have described past episodic lava fountaining eruptions at Kilauea Iki (1959) and Maunaulu (1969). Next week, we will continue this series with a ...

Fluid inclusions in volcanoes are dominantly composed of carbon dioxide. At magmatic temperatures — 2,192 degrees — the density of the carbon dioxide strongly depends on pressure, which is influenced ...