M 4.7 in Chile on 21 Oct 2012 11:40 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: 16.5 Km
Lat/Lon: -37.6175 , -73.4396
Event Date: 21 Oct 2012 11:40 UTC
21 Oct 2012 08:40 Local
Exposed Population:
1140000 people within 100km
Source: NEIC usb000da2s
Inserted at: 21 Oct 2012 12:18 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usb000da2s 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
120365 0.5 21 Oct 2012 11:40 4.7M, 16.5km N/A 1.1 million (in 100km) 00:37 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 Chile , Region of Bio-Bio (population 1,789,433) . The nearest places are and Concepción.

Radius Population
100 km 1.2 million people
75 km 360000 people
50 km 150000 people
20 km 71000 people
10 km 24000 people
5 km 14000 people
2 km 1200 people

Affected Provinces

Country Region Province Population
Chile Bio-Bio 1.8 million people
Chile Araucania 810000 people

Affected populated places

Name Region Province Country City class Population Distance
Concepción Bio-Bio Chile Major city 210000 people 94 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
La Playa 8 49 km
Los Angeles LSQ 114 Civ. Paved Yes 5500 93 km
Carriel Sur International CCP 12 Civ. Paved Yes 7500 99 km

Ports

Name LOCODE Country Distance
Lebu CLLEB Chile 18 km
Puerto Yana Chile 33 km

More information

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