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 ...

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 ...

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 ...

Lava is streaming nearly four kilometers down the flanks of Mayon Volcano, sulfur dioxide is billowing from the crater at ...

Hawaiian eruption imminent: USGS raised Kilauea’s alert to WATCH/ORANGE as summit inflation and vent spattering suggest Episode 47 could begin within hours. Philippines on high alert: Mayon’s lava and ...

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 ...

Pyroclastic density currents (PDCs) represent some of the most formidable and complex volcanic phenomena, characterised by a turbulent mixture of solid particles and gases that surge down slopes at ...

Communities told to stay on high alert, avoid 6-km danger zone amid ongoing activity Mayon Volcano's eruption kicks up a thick ash plume as seen from Legazpi City, Albay province, about 500km ...

MANILA, Philippines — State volcanologists yesterday detected a collapse of lava deposits on the summit crater of Mayon Volcano in Albay, which generated incandescent lava flows and pyroclastic ...