Weather Alert: Indonesia, Volcanic Eruption of Mount Semeru in East Java

Location: Mt. Semeru, Lumajang Regency, Malang, East Java

Event: Volcanic eruption of Mt. Semeru

On November 19, 2025, Indonesian government authorities raised the alert level of Mount Semeru in East Java to Level IV (the highest alert tier) following a volcanic eruption that created significant ash clouds and pyroclastic flows (hot rock and ash flows) on the volcano’s southeast and southern flanks. Authorities have evacuated nearby residents and cautioned the public to avoid all activities within an 8-kilometer radius of the volcano. Indonesian government emergency response operations are ongoing.

Mt. Semeru is located south of popular tourist destination Mt. Bromo, and approximately 150km (93 miles) south of Surabaya.

Actions to take:

• Monitor the local news for updates, especially if you have air travel planned during this event.
• Notify friends and family of your safety.
• Avoid travel and other activities near Mount Semeru and surrounding areas of Lumajang and Malang Regencies in East Java.
• Have evacuation plans that do not rely on U.S. government assistance.
• Visit the Indonesian Disaster Management Agency’s  twitter account for further local news and guidance.

Assistance:

• U.S. Embassy Jakarta, Indonesia
  • +62-21-5083-1000
  • https://id.usembassy.gov/  
  • JakartaACS@state.gov
• U.S. Consulate General Surabaya, Indonesia
  • +62-31-297-5300 or +62-21-5083-1000 after hours
  • https://id.usembassy.gov/embassy-consulates/surabaya/  
  • SurabayaACS@state.gov
• U.S. Consular Agency in Bali, Indonesia
  • +62-361-233-605 or +62-21-5083-1000 after hours
  • CABali@state.gov
• For regular updates, follow the U.S. Consulate General in Surabaya on Instagram, Twitter  and Facebook  and the U.S. Embassy in Jakarta on Instagram , Twitter  and Facebook .
• State Department – Consular Affairs
  • 888-407-4747 or 202-501-4444
  • Follow us on Facebook  and Twitter  
• Indonesia Country Information  
• Enroll in Smart Traveler Enrollment Program (STEP)  to receive security updates
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