Volcanic Eruption in East Java Province, Indonesia

Warning - Level 3, Avoid Nonessential Travel
Alert - Level 2, Practice Enhanced Precautions
Watch - Level 1, Practice Usual Precautions

As the COVID-19 situation around the world changes, CDC is monitoring COVID-19 risk in each country and making travel recommendations. If you are considering international travel, see CDC’s COVID-19 Travel Recommendations by Destination.

Key points

  • Travelers should avoid all nonessential travel to East Java Province, Indonesia.
  • On December 4, 2021, Mount Semeru, a volcano in East Java Province, Indonesia, erupted.
  • The lava and ash have caused significant damage and thousands of people have been displaced. Casualties have been reported.
  • There is ongoing risk of further volcanic eruptions and toxic explosions.
  • If you must travel to Indonesia, obey all instructions from local authorities.
Map of affected area in Indonesia
Map of affected area (see larger map)
Volcanic Eruption Dangers

Volcanoes can produce ash, toxic gases, lava flows, flash floods of hot water, and fast-moving flows of hot gases and debris. When a volcano erupts, some dangers can occur with little or no notice.

Volcanic eruptions can result in additional threats, including mudslides, power outages, contamination of water sources, and wildfires.

Serious health concerns after a volcanic eruption include respiratory illnesses, suffocation, burns, injuries from ashfall and collapsed structures, infectious diseases, and vehicle accidents related to the conditions caused by ash.

If you must travel, take steps to protect yourself.

Before Travel

During Travel

If you get sick during or after travel

  • If you feel sick during or after travel, seek medical care immediately and tell your healthcare provider about your activities during your trip, including contact with volcanic ash.

Traveler Information

Clinician Information