M 5.2 in Chile on 28 Jul 2011 16:05 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: 5.2M
Depth: 22.4 Km
Lat/Lon: -35.7537 , -73.0709
Event Date: 28 Jul 2011 16:05 UTC
28 Jul 2011 11:05 Local
Exposed Population:
250000 people within 100km
Source: NEIC usc00055em
Inserted at: 28 Jul 2011 16:30 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc00055em 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
110852 0.5 28 Jul 2011 16:05 5.2M, 22.4km N/A 250 thousand (in 100km) 00:24 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) .

Radius Population
100 km 240000 people
75 km 89000 people
50 km 15000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Country Region Province Population
Chile Bio-Bio 1.8 million people
Chile Maule 860000 people

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
Quivolgo 14 Civ. Unpaved No 3100 78 km

Ports

Name LOCODE Country Distance
Constitucion Chile 77 km
Tome CLTOM Chile 98 km

More information

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