Fine rock and glass particles ejected during volcanic eruptions. Hazardous to aviation and human health.
phenomenaWhat is Volcanic Ash?
Indonesia and the Philippines sit on the Pacific Ring of Fire and have the most active volcanoes in Southeast Asia. Volcanic ash clouds are a significant aviation hazard — they can damage jet engines and reduce visibility. Major eruptions like Mount Pinatubo (1991, Philippines) and Mount Agung (2017-2018, Bali) caused widespread flight disruptions. Health effects include eye irritation, respiratory problems and contaminated water supplies. Volcanic eruptions also inject aerosols that temporarily cool the global climate.
Key points
- Fine rock and glass particles ejected during volcanic eruptions. Hazardous to aviation and human health.
- Category: phenomena
Related terms
See also: volcanic-ash is connected to other weather concepts. Browse the full glossary for related definitions.