The Kīlauea summit area in Hawaiʻi Volcanoes National Park is temporarily closed due to dangerous amounts of tephra falling. Highway 11 is closed between Kīlauea summit area in Hawaiʻi Volcanoes ...

When geologists study volcanic hazards or try to anticipate what a volcano may do in the future, one of their primary tools is to examine the volcano’s past behavior.

Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Cinder cones are circular or oval cones made up of small fragments of lava from a single ...

Authorities reported tephra fall—including ash, Pele’s hair, and larger fragments—across Hawaiʻi Volcanoes National Park.

They're born. They live once, erupting for a period that might last for days, years or decades. Then, they go dark and die. This narrative describes the life of a monogenetic volcano, a type of ...

If Glacier Peak were to wake up tomorrow and start rumbling, it would be hard for scientists to tell. The National Volcanic Early Warning and Monitoring Systems Act, passed in February, sets out to ...

This chapter summarizes the principal conclusions and recommendations developed elsewhere in this report. Major conclusions are printed in italics and recommendations in bold. Basic research in the ...

One of the most deadly and dangerous volcano hazards isn’t lava. Mudflows called lahars can come without clear warning.

Volcanoes might seem like nature’s incinerators, but using them to burn up trash would be dangerous and disrespectful to ...