Sunda Volcanic Arc · Indonesia

Merapi

A frequently listed Sunda arc stratovolcano, set beside the low Krakatau caldera and Tambora’s row in the same subregion.

Not a forecast. This page explains published records. It does not say when or where the next earthquake or eruption will happen.

Catalog record

These fields are copied from the Smithsonian Global Volcanism Program Holocene volcano snapshot stored on this site. The file was fetched 2026-09-19T12:21:44Z. It is a location catalog, not a live alert.

Catalog name
Merapi
GVP number
263250
Country
Indonesia
Type
Stratovolcano
Elevation
2,910 m
Region
Sunda-Banda Volcanic Regions
Subregion
Sunda Volcanic Arc
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Last-eruption year
2026
Evidence code
Eruption Observed
Latitude, longitude
-7.54, 110.446

Elevation rank in the Sunda Volcanic Arc in this snapshot: 17 of 71. Rank is by the listed elevation only. It is not a hazard ranking.

How to read the last-eruption year

The year is a catalog field. A recent year means the snapshot recorded activity in that year. It is not an alert level, a size, or a statement about what happens next. Evidence codes in this file include “Eruption Observed” and “Eruption Dated.” Those are Smithsonian categories for how the eruption year was established, not a forecast flag.

Setting

Merapi is listed at 2,910 m with evidence “Eruption Observed” and a last-eruption year of 2026. In the same Sunda Volcanic Arc the snapshot lists Tambora at 2,850 m with a last-eruption year of 1967, and Krakatau as a caldera at 285 m. The arc has 71 Holocene entries in this file. Elevation rank is crowded, which is why this page leads with the catalog fields instead of a superlative.

The tectonic code is subduction under continental crust. The Indonesia rectangle on the About page is the belt we use for “inside the Ring of Fire” on the map. It is wider than any one volcano.

Inside these documented rectangles: Indonesia / Sunda / Banda arcs. The rectangles are documented on the About page. They are a lat/lon belt, not an official plate polygon.

Other volcanoes in this subregion

Highest listed elevations in the Sunda Volcanic Arc in this snapshot, excluding this volcano when it is already first:

Distance to published great-earthquake epicenters

The distances below use this volcano’s catalog coordinates and epicenters from the USGS list of the 20 largest earthquakes since 1900. They are spherical distances to points, not distances to a fault trace, and not a hazard score.

You can repeat the measurement for any coordinates on the distance to fault references tool.

What this page will not tell you

It will not tell you the next eruption time, the next earthquake on the neighboring trench, or an evacuation route. For U.S. volcano notices, use the USGS Volcano Hazards Program. For earthquakes, use the USGS event pages linked from Live Quakes. This site’s volcano map only draws the Holocene catalog.

Sources