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 ...

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, ...

Last week’s “Volcano Watch” article reviewed the lava fountaining eruption of Kilauea Iki in 1959. This week, we’ll continue looking back in time at the next episodic lava fountaining eruption in ...

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 ...