M 4.7 in China on 20 Nov 2012 02:24 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: 4.7M
Depth: 30.8 Km
Lat/Lon: 38.617 , 106.246
Event Date: 20 Nov 2012 02:24 UTC
20 Nov 2012 10:24 Local
Exposed Population:
3000000 people within 100km
Source: NEIC usc000dvaj
Inserted at: 20 Nov 2012 02:43 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000dvaj 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
120975 0.5 20 Nov 2012 02:24 4.7M, 30.8km N/A 3 million (in 100km) 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 , Autonomous Region of Ningxia (population 5,158,847) . The nearest places are and Helan.

Radius Population
100 km 4.1 million people
75 km 3.3 million people
50 km 2.4 million people
20 km 980000 people
10 km 110000 people
5 km 26000 people
2 km 2500 people

Affected Provinces

Region Province Country Population
Ningxia China 5.2 million people

Affected populated places

Name Region Province Country City class Population Distance
Helan Ningxia China Village - 4 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
Yinchuan West 1372 25 km
Yinchuan INC 1260 26 km

Dams

Reservoir Dam Name River Year Distance
Qingtongxia Huang He 1968 84 km

More information

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