GDACS records magnitude 5 earthquake in Indonesia; 1.2 million potentially within 100 km

Cover image: MODIS Land Rapid Response Team, NASA GSFC — Public domain, via Wikimedia Commons.

The Global Disaster Alert and Coordination System (GDACS) recorded an earthquake in Indonesia on 25/08/2026 at 14:58 UTC. The event is listed in the report with magnitude 5, an estimated depth of 10 km, and is classified in the record title as "Green". GDACS indicates that 1.2 million people are potentially in the area within a 100 km radius of the epicenter.

Technical data and population reach recorded by GDACS

The technical elements available in the GDACS report are: magnitude 5; depth 10 km; date and time recorded as 25/08/2026 14:58 UTC; and an estimate of 1.2 million people within 100 km of the epicenter. These items appear in the event summary provided by the platform.

The record title also contains the word "Green", included in the GDACS item itself. The meaning or criteria for that classification are stated in the platform's report, not in this evidence package; therefore, we limit ourselves to reporting the presence of that designation in the record.

The population reach figures reflect an estimate of people potentially exposed within the radius indicated by the system; the report does not provide additional details about the demographic or administrative distribution of that population in the material available.

What the report confirms and what remains unconfirmed

Confirmed in the GDACS material: the occurrence of the earthquake at the reported date and time, magnitude 5, depth 10 km, and the estimate of 1.2 million people within 100 km. These are the technical details contained in the consulted record.

Unconfirmed in the evidence package: the report presented does not contain information on casualties, material damage, evacuations, service interruptions, or other human consequences. GDACS itself emphasizes that the data are purely indicative.

The report contains, in outreach language, a usage warning: the information is "purely indicative and should not be used for any decision making without alternate sources of information". We maintain this caution: the technical data serve monitoring purposes and are not intended for operational decision-making without additional verification.

Sources and recommended updates

To confirm impacts or response measures, it is necessary to await updates from GDACS and from official or local sources — government institutions, regional emergency services and local seismic monitoring — which are not included in this evidence package.

This report contains no confirmation of human or material occurrences beyond the technical data listed above. We recommend following new GDACS bulletins and statements from Indonesian authorities for information on damage, casualties and response actions.

We will continue to publish updates as additional verified sources become available; until then, we keep the information strictly within what is stated in the GDACS report.

Sources consulted:

• GDACS - Global events 24h — https://www.gdacs.org/report.aspx?eventtype=EQ&eventid=1561748