Overall Orange Earthquake in China on 09 Oct 2025 05:17 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 China on 09 Oct 2025 05:17 UTC

Hazard models

Rapid Impact

Shakemap

Tsunami

Event summary

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

Earthquake Magnitude:	5.5M
Depth:	10 Km
Lat/Lon:	30.9113 , 99.92
Event Date:	09 Oct 2025 05:17 UTC 09 Oct 2025 13:17 Local
Exposed Population:	3 thousand (in MMI>=VII)
Source:	NEIC us6000rfs1
Inserted at:	09 Oct 2025 08:01 UTC
INFORM Coping capacity of the alert score:	3.6 (China)

GDACS Score

For more info on GDACS score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	1		1
us6000rfs1	Scaled population (raster)	2.17
	C1 shakemap	-0.37
	C2 shakemap	0.76
	Country Vulnerability	0
	INFORM_normalised	0.82
	Score no CC	1280

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
1664974		1.1	09 Oct 2025 05:17	5.6M, 10km	7.56	3 thousand (in MMI>=VII)		00:17	NEIC
1664983		1	09 Oct 2025 05:17	5.5M, 10km	7.41	3 thousand (in MMI>=VII)		02:43	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

The earthquake happened in China ,of Sichuan (population 118,811,800) . The alertlevel for this event is ORANGE

Intensity	Population
	2700 people
	1400 people
	25000 people

Shakemaps Timeline

Shake id #	Score	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	0	1664974	99.939/30.911	5.6	10	7	09 Oct 2025 05:43	00:25	(new episode)
2	1.1	1664974	99.939/30.911	5.6	10	8.072	09 Oct 2025 07:42	02:25	(upd of #1)
3	1	1664983	99.92/30.911	5.5	10	7.862	09 Oct 2025 08:09	02:51	(new episode)
4	1	1664983	99.92/30.911	5.5	10	7.85	10 Oct 2025 14:02	1d 08:44	(upd of #3)
5	1	1664983	99.92/30.911	5.5	10	7.823	11 Oct 2025 14:01	2d 08:43	(upd of #4)

Affected Provinces

Region Province	Country	Population
Sichuan	China	no people
Sichuan	China	2700 people
Sichuan	China	1700 people
Sichuan	China	22000 people
Sichuan	China	150000 people
Xizang	China	<1000 people
Sichuan	China	260000 people
Xizang	China	25000 people

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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