M 4.6 in China on 20 Apr 2013 02:38 UTC

Hazard models

EQ parameters
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: 4.6M
Depth: 12.1 Km
Lat/Lon: 30.2604 , 103.129
Event Date: 20 Apr 2013 02:38 UTC
20 Apr 2013 10:38 Local
Exposed Population:
10730000 people within 100km
Source: NEIC usb000gcg6
Inserted at: 20 Apr 2013 03:26 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usb000gcg6 Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
124205 0.5 20 Apr 2013 02:38 4.6M, 12.1km N/A 10.7 million (in 100km) 00:48 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 , Province of Sichuan (population 118,811,800) . The nearest places are Chengdu, Fulin, and Xindian.

Radius Population
100 km 14 million people
75 km 6.8 million people
50 km 3.1 million people
20 km 520000 people
10 km 120000 people
5 km 34000 people
2 km 7100 people

Affected Provinces

Region Province Country Population
Sichuan China 118.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Xindian Sichuan China Village - 11 km
Chengdu Sichuan China Major city 2.3 million people 101 km
Fulin Sichuan China Major city 1 million people 109 km

see full list

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Chengdu Qionglai 533 41 km
Chengdu Pengshan 454 69 km

Dams

Reservoir Dam Name River Year Distance
Baizhang n/a 12 km

More information

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