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
- Krakatau
- GVP number
- 262000
- Country
- Indonesia
- Type
- Caldera
- Elevation
- 285 m
- Region
- Sunda-Banda Volcanic Regions
- Subregion
- Sunda Volcanic Arc
- Tectonic setting
- Subduction zone / Continental crust (> 25 km)
- Last-eruption year
- 2024
- Evidence code
- Eruption Observed
- Latitude, longitude
- -6.1009, 105.4233
Elevation rank in the Sunda Volcanic Arc in this snapshot: 71 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
Krakatau’s catalog type is caldera. Merapi, same Sunda Volcanic Arc, is a stratovolcano at 2,910 m. Both have a last-eruption year of 2026 in this snapshot. A shared year code does not mean the eruptions matched in size or style. The field is a year, not a narrative.
Both points fall in the Indonesia / Sunda / Banda rectangle. The USGS list of the largest earthquakes since 1900 includes several Sumatra events on this margin, including the 2004 M9.1 Sumatra-Andaman earthquake. Distance from the catalog point to those epicenters is geometry. It does not tie the caldera to a specific future earthquake. This page does not assign a VEI to Krakatau’s historical eruptions, because the USGS VEI article cited here does not.
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:
- Kerinci, 3,800 m, last-eruption year 2024.
- Rinjani, 3,726 m, last-eruption year 2016.
- Semeru, 3,657 m, last-eruption year 2026.
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.
- 2007 M8.4 southern Sumatra (2007-09-12 11:10 UTC) — 485 km from the catalog point.
- 2005 M8.6 Nias, Indonesia (2005-03-28 16:10 UTC) — 1,297 km from the catalog point.
- 2004 M9.1 Sumatra-Andaman (2004-12-26 00:58 UTC) — 1,481 km from the catalog point.
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.