M 4.6 in China on 26 Jul 2013 16:25 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: 31.4 Km
Lat/Lon: 32.9279 , 104.8623
Event Date: 26 Jul 2013 16:25 UTC
27 Jul 2013 00:25 Local
Exposed Population:
2852191 people within 100km
Source: NEIC
Inserted at: 26 Jul 2013 16:53 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
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
1000850 0 26 Jul 2013 16:25 4.6M, 31.4km N/A 2.9 million (in 100km) 00:28 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 Gansu (population 24,790,140) . The nearest places are Tianshui, and Heng-tan.

Radius Population
100 km 2.9 million people
75 km 1.6 million people
50 km 510000 people
20 km 120000 people
10 km 26000 people
5 km 7600 people
2 km 1200 people

Affected Provinces

Region Province Country Population
Gansu China 24.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Heng-tan Gansu China Village - 8 km
Tianshui Gansu China Major city 1 million people 199 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
Guangyuan 626 98 km

Dams

Reservoir Dam Name River Year Distance
Bikou Bailong Jiang 1976 39 km

More information

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