A wall of superheated rock and gas tore down the slopes of Mayon Volcano on the evening of May 2, 2026, after unstable lava near the summit collapsed without warning. The pyroclastic flows traveled ...

Pyroclastic flows from Mayon Volcano surged 4 kilometers down the Mi-isi Gully in late May 2026, marking the farthest runout since the current eruptive episode began. Sulfur dioxide emissions spiked ...

Scientists think they’ve figured out how pyroclastic flows, fast-moving bringers of death during volcanic events, can travel such incredible distances and speeds despite the friction between the ...

Avalanches of ash, gas and rock that cascade downhill during volcanic eruptions may be even more dangerous than scientists had realized. Pulses of high pressure form within these slides, known as ...

Mount Etna, the volcano that towers over eastern Sicily, has again captivated the world with a spectacular show, spewing smoke and high into the sky. But the defining event of Monday’s eruption was ...

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 ...