Volcano name: Anak Krakatau, located between the islands of Java and Sumatra.
Ash plume reached about 20,000 feet on the Java side and 50,000 feet on the Sumatra side.
Six airports, including the main Jakarta airport, paused flights; 301 flights cancelled.
58 of the cancelled flights were international routes.
Schools cancelled activities and fishermen stopped fishing to avoid ash exposure.
Public advised to wear masks, use eye protection, limit outdoor activities, and keep water sources covered.
Nearby volcanoes such as Mount Semeru also erupted, but no tsunami threat was identified.
The ash cloud forced Soekarno‑Hatta International Airport to suspend operations, affecting over 300 flights.
Schools in nearby areas were closed and fishermen halted their trips due to ash.
Authorities advised wearing masks, protecting eyes, and staying away from the crater.
Other volcanoes on the island chain also showed activity, but no immediate tsunami risk was reported.
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