Authorities have raised the alert level after ash spewed from the Popocatépetl volcano in central Mexico. It's one of the ...

The discovery has revealed a hidden process that could change how scientists understand volcanic systems.

A recent study reveals that the Poás volcano has changed its eruption pattern, redefining the global ash-related risk map.

A volcanic formation known as Pele’s hair is produced when air-filled magma is stretched, according to a new study by a team ...

The eruptions at Kilauea prompted closures at a national park and part of a highway because of falling glassy volcanic ...

Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. This photo shows the gap between the south (left) and ...

Hawaii's Kilauea volcano erupts with 1,000-foot lava fountains, forcing highway and park closures as the volcanic ash falls near Big Island communities.

Geochemical analysis of erupted tephra samples over the past decade help scientists understand the temperature of Kilauea’s shallow magma system under the summit — and things have been “heating up!” ...

The summit region of Kīlauea experienced tephra fallout and a Kona low storm this past week. Cleanup, recovery, and regrowth ...

The magma reservoir of the largest volcanic eruption of the Holocene is refilling. This Kobe University insight on the Kikai ...

A new NASA satellite image has captured a rare view of an erupting volcano, revealing its bright red lava flow as seen from ...

Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample ...