Ash plume from Raung volcano reaches 4.3 km (14 100 feet) a.s.l., Indonesia

An ash eruption was reported at Raung volcano, East Java, Indonesia, as observed in a volcanic ash advisory issued at 07:50 UTC on June 20, 2025. The eruption began at 19:24 UTC on June 19, 2025, producing an ash plume that was tracked moving westward. The volcano’s summit stands at 3 260 m (10 695 feet) and ongoing emissions have been reported by local volcanic monitoring agencies.

The ash cloud was observed reaching a maximum altitude of FL160, equivalent to 4 880 m (16 000 feet) above sea level, but official reports confirm volcanic ash identified by CVGHM reaching about 1 000 m above the summit, or around 4 260 m (14 100 feet) a.s.l. Ash movement was estimated based on ground observations and satellite imagery, though detection on recent satellite images was hampered by meteorological cloud cover. The ash plume was forecast to persist and drift westward at 5 kt over the next 18 hours. The current Aviation Color Code is Orange. No further ash emissions were clearly identifiable in satellite data at the time of the report.

Raung volcano is not mentioned in the most recent Smithsonian / USGS Weekly Volcanic Activity Report, indicating no other significant changes or notable recent activity at this volcano during the last reporting week. For ongoing updates, official volcanic monitoring and advisory sources should be consulted.

Raung is a large stratovolcano located in East Java, Indonesia. It is one of Java’s most active volcanoes, known for frequent explosive eruptions generating ash plumes and occasional lava flows. Hazards include ashfall, pyroclastic flows, and lahars. The volcano rises in a sparsely populated area, but the cities of Bondowoso and Banyuwangi, as well as rural communities, lie within tens of kilometers and could be affected by activity depending on eruption size and wind direction.