This latest activity, designated as Episode 42, is currently confined to the summit caldera within Hawaiʻi Volcanoes National Park. Ground sensors indicate that winds are blowing from the northeast, ...

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

Kilauea, the restless shield volcano on Hawaii’s Big Island, has been erupting in dramatic, repeating bursts since late 2024, with lava fountains and volcanic gas-and-ash plumes rising high above the ...

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 ...

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

Alaska’s Mount Spurr volcano continues to show signs of unrest, and that has led to an alert level increase in the city of ...

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

Philippine Institute of Volcanology and Seismology (DOST-Phivolcs) has recorded the largest pyroclastic density current (PDC) since January, causing heavy ashfall that has affected 32 barangays in ...

An Alaskan volcano that has been inactive for more than 100 years is showing signs of rumbling, according to scientists. However, there's a chance that the activity could be signs of a pending ...

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 ...