A team of volcanologists think they have discovered a signal they call the Jerk that provides up to 8 hours of advanced warning of an eruption.

KINGSTOWN, St. Vincent (AP) — La Soufriere volcano has fired an enormous amount of ash and hot gas in the biggest explosive eruption yet since volcanic activity began on the eastern Caribbean island of St. Vincent late last week, with officials worried ...

While the USGS scientists learned plenty about volcanism in El Salvador during this trip, it also provided key insights to bring home to our own volcanoes. Explosive eruptions in Hawaii are relatively rare, but the ability to correctly interpret their deposits is critical to understanding potential future hazards.

A colossal underwater volcano in the South Pacific may have revealed a surprising new weapon against climate change. After the 2022 eruption of Hunga Tonga–Hunga Ha’apai, scientists detected enormous amounts of formaldehyde in the atmosphere — a telltale sign that methane,

USGS scientists from the Hawaiian, Cascades and Alaska Volcano Observatories discussed their experiences and best practices developed during recent eruptions at Kīlauea and Mauna Loa in Hawaiʻi, as well as Great Sitkin and Pavlof in Alaska.