Alert Level 3 was raised over Mayon Volcano in Albay due to a “high level” of unrest, with pyroclastic density currents (PDCs) recorded. But what exactly are PDCs? The Philippine Institute of ...

Pyroclastic density currents (PDCs) are high-energy, ground-hugging flows of hot gas and fragmented volcanic material that pose one of the greatest lethal volcanic hazards. Their dynamics are governed ...

MANILA, Philippines — Mayon Volcano in Albay continued to generate another pyroclastic density current, or “uson,” marking ...

Thermal camera footage also released by PHIVOLCS showed pyroclastic density currents — fast-moving flows of hot gas and volcanic material — cascading down the southern slopes of the volcano. The ...

Sped-up footage and snapshots captured by the PHIVOLCS Quick Response Team and the Mayon Volcano Observatory show lava ...