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

Sirens sounded as Semeru Volcano in Indonesia sent a fast-moving pyroclastic flow down its southeastern flank, highlighting ...

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 ...

An explosive eruption at Semeru Volcano sent a fast-moving pyroclastic flow racing down its slopes. The dense cloud of hot ...

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 ...

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 ...