Overall Green Earthquake in Indonesia on 21 Sep 2026 01:41 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

M 5.5 in Indonesia on 21 Sep 2026 01:41 UTC

Hazard models

Rapid Impact

Shakemap

Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	5.5M
Depth:	10 Km
Lat/Lon:	-8.307 , 120.5793
Event Date:	21 Sep 2026 01:41 UTC 21 Sep 2026 09:41 Local
Exposed Population:	2 thousand (in MMI>=VII)
Source:	NEIC us7000tiur
Inserted at:	21 Sep 2026 06:18 UTC
INFORM Coping capacity of the alert score:	4.8 (Indonesia)

GDACS Score

For more info on GDACS score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us7000tiur	Scaled population (raster)	2.16
	C1 shakemap	-1.73
	C2 shakemap	0.79
	Country Vulnerability	0
	INFORM_normalised	0.96
	Score no CC	10

Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

ID	Level	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1735139		0	21 Sep 2026 01:41	5.5M, 10km	6.69	2 thousand (in MMI>=VII)		04:37	NEIC

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

Intensity	Population
	2400 people
	30000 people
	63000 people

Shakemaps Timeline

Level	Shake id #	Score	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
	1	0	1735139	120.579/-8.307	5.5	10	6.701	21 Sep 2026 08:01	06:19	(new episode)
	2	0	1735139	120.579/-8.307	5.5	10	6.701	22 Sep 2026 02:04	1d 00:22	(upd of #1)

Affected Provinces

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

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