A superheated torrent of gas, rock, and volcanic debris tore 4 kilometers down Mayon volcano’s Mi-isi Gully in early June 2026, marking the longest pyroclastic density current recorded during the ...

Mount Merapi released a pyroclastic flow that traveled 2 kilometers southwest as the volcano remains at Alert Level III.

Guatemala's Volcán de Fuego has erupted into its most explosive mode of 2026, sending pyroclastic flows — fast-moving avalanches of superheated gas, ash, and rock capable of traveling up to 435 mph ...

A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ...

Volcanologist Professor Chris Jackson discovers evidence of the deadly pyroclastic flow. Volcanologist Professor Chris Jackson reveals the power of the deadly pyroclastic flow that had swept through ...

The Fuego stratovolcano is one of the most active in Central America and popular with hikers.