The superheated avalanche tore down Mayon Volcano’s southeastern flank in minutes, traveling 5.08 kilometers from the summit before grinding to a halt in a drainage channel above the farming ...

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 ...

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 ...

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 ...

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 ...

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

Dumping literal tons of hot volcanic material down a lab flume may finally have revealed how searing mixtures of hot gas and rock travel so far from volcanic eruptions. These pyroclastic flows can ...