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Mount Semeru Erupts: Highest Alert Issued
19 Nov, 2025
Summary
- Mount Semeru volcano alert raised to highest level.
- Volcano unleashed hot ash clouds up to 7 kilometers.
- No casualties reported following the eruptions.

The alert level for Mount Semeru, Indonesia's highest volcano, was raised to its maximum on Wednesday due to a series of powerful eruptions. Hot ash clouds, mixed with rock and gas, traveled up to 7 kilometers down the volcano's slopes, while ash columns reached 2 kilometers into the atmosphere.
Several villages were covered in falling ash as authorities escalated the alert status twice throughout the day. Despite the significant volcanic activity, no injuries or fatalities have been reported. Mount Semeru, located on Java, Indonesia's most populated island, has a history of frequent eruptions.



