Overall Orange Earthquake alert in China on 15 Sep 2021 20:33 UTC

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

M 5.4 in China on 15 Sep 2021 20:33 UTC

Hazard models

EQ parameters

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:	5.4M
Depth:	10 Km
Lat/Lon:	29.2165 , 105.4067
Event Date:	15 Sep 2021 20:33 UTC 16 Sep 2021 04:33 Local
Exposed Population:	About 37000 people in MMI 40 thousand (in MMI>=VII)
Source:	NEIC us7000fbky
Inserted at:	15 Sep 2021 20:52 UTC
INFORM Coping capacity of the alert score:	3.6 (China)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	1.7		1.7
us7000fbky	Scaled population (raster)	3.79
	C1 shakemap	-0.37
	C2 shakemap	0.76
	Country Vulnerability	0
	INFORM_normalised	0.82

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	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1396900		1.7	15 Sep 2021 20:33	5.4M, 10km	6.73	40 thousand (in MMI>=VII)		00:19	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 86,254) . The alertlevel for this event is RED

Intensity	Population
	110000 people
	750000 people
	4.3 million people

Shakemaps Timeline

Shake id #	Score	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	2	1396900	29.216/105.407	5.4	10.0	6.811	15 Sep 2021 20:57	00:23	(new episode)
2	1.6	1396900	29.216/105.407	5.4	10.0	6.769	15 Sep 2021 21:30	00:57	(upd of #1)
3	1.7	1396900	29.182/105.39	5.4	10.0	6.726	15 Sep 2021 21:59	01:25	(upd of #2)
4	1.7	1396900	29.182/105.39	5.4	10.0	6.726	15 Sep 2021 22:39	02:05	(upd of #3)
5	1.7	1396900	29.182/105.39	5.4	10.0	6.726	16 Sep 2021 23:05	1d 02:32	(upd of #4)

Affected Provinces

Region Province	Country	Population
Sichuan	China	86000 people
Sichuan	China	750000 people
Sichuan	China	850000 people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Shengdeng	Sichuan	China	Village	-	18 km
Longchang	Sichuan	China	City	-	20 km
Guangshunchang	Sichuan	China	City	-	20 km
Daisi	Sichuan	China	Village	-	26 km

see full list

Critical infrastructure

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

Dams

Dam Name	Year	Distance
Guyumiao	1979	21 km
Bailinsi	1958	22 km
Sanxikou	1962	26 km

More information

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

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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