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What caused Mount Semeru to erupt again?
Mount Semeru's recent eruptions are part of its natural volcanic activity, which is influenced by its location on the Pacific Ring of Fire. The buildup of magma beneath the surface causes pressure that eventually leads to eruptions. The latest activity was triggered by this ongoing geological process, with ash clouds reaching up to 5.6 km high and lava flows extending 7 km.
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Is it safe to stay near Mount Semeru right now?
No, it is not safe to stay near Mount Semeru at this time. Authorities have raised the alert level to the highest, and ongoing eruptions pose serious risks such as ash fall, pyroclastic flows, and lava. Residents are advised to evacuate and stay away from the volcano's slopes until it is declared safe.
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What are the evacuation procedures for residents?
Evacuation procedures involve alerting residents through local authorities and emergency services. Evacuation centers are set up in safe zones away from the volcano. Residents are advised to follow official instructions, take essential belongings, and stay informed through updates from authorities and news sources.
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How high can ash clouds from eruptions reach?
Ash clouds from Mount Semeru can reach heights of up to 5.6 kilometers, posing hazards to air travel and health. These ash plumes can spread over large areas, affecting communities, agriculture, and transportation. Monitoring agencies track these eruptions closely to provide timely warnings.
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How often does Mount Semeru erupt?
Mount Semeru has a long history of frequent eruptions, with recent activity occurring in December 2021 and now in November 2025. Its location on the Pacific Ring of Fire makes it one of Indonesia's most active volcanoes, with eruptions happening over the past two centuries.
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What safety tips should residents follow during an eruption?
Residents should stay indoors if possible, wear masks to avoid inhaling ash, and keep emergency kits ready. It's crucial to follow evacuation orders, avoid river valleys prone to lahars, and stay updated through official channels for the latest safety information.