Pyroclastic flows are some of the most fearsome hazards posed by erupting volcanoes. These avalanches of superheated ash, gas, and rock are responsible for some of the most famous volcanic disasters ...

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 ...

Semeru volcano — the tallest volcano on Java at 3,676 meters — erupted on the afternoon of November 19, 2025, with pyroclastic flows racing at high speed more than 8.5 kilometers down its slopes, as ...

Residents of the city of Shimabara in Nagasaki Prefecture, southwestern Japan, on Wednesday mourned the 43 victims of a pyroclastic flow from the Fugen peak of Mount Unzen in the prefecture that ...

Add Yahoo as a preferred source to see more of our stories on Google. A lava collapse at Mayon Volcano in the Philippines triggered a fast-moving pyroclastic flow on May 13, sending a volcanic plume ...