M 4.6 in Peru on 21 May 2011 01:34 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: 35 Km
Lat/Lon: -3.5052 , -80.3039
Event Date: 21 May 2011 01:34 UTC
20 May 2011 20:34 Local
Exposed Population:
1030000 people within 100km
Source: NEIC usc0003kf7
Inserted at: 21 May 2011 01:58 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc0003kf7 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
109023 0.5 21 May 2011 01:34 4.6M, 35km N/A 1 million (in 100km) 00:23 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 Peru , Department of Tumbes (population 161,200) .

Radius Population
100 km 1 million people
75 km 770000 people
50 km 540000 people
20 km 180000 people
10 km 47000 people
5 km 3500 people
2 km <1000 people

Affected Provinces

Country Region Province Population
Peru Tumbes 160000 people
Ecuador El Oro 450000 people
Ecuador Loja 420000 people
Ecuador Guayas 2.8 million people
Peru Piura 1.7 million people
Ecuador Azuay 560000 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
Pedro Canga TBP 25 Civ. Unpaved Yes 8200 11 km
Victor Larrea 52 Civ. Paved No 3400 38 km

Ports

Name LOCODE Country Distance
Zorritos PEZOR Peru 43 km
Puerto Bolivar ECPBO Ecuador 44 km

More information

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