M 4.5 in Costa Rica on 27 Apr 2013 06:01 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: 4.5M
Depth: 152.2 Km
Lat/Lon: 10.6901 , -84.8081
Event Date: 27 Apr 2013 06:01 UTC
27 Apr 2013 00:01 Local
Exposed Population:
1130000 people within 100km
Source: NEIC usb000ggj2
Inserted at: 27 Apr 2013 06:30 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usb000ggj2 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
124308 0.5 27 Apr 2013 06:01 4.5M, 152.2km N/A 1.1 million (in 100km) 00:29 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 Costa Rica , Province of Alajuela (population 578,124) . The nearest places are San José, Guatuso, La Palmera, and La Muerte.

Radius Population
100 km 1.2 million people
75 km 510000 people
50 km 220000 people
20 km 34000 people
10 km 6000 people
5 km 1700 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Alajuela Costa Rica 580000 people
Guanacaste Costa Rica 230000 people

Affected populated places

Name Region Province Country City class Population Distance
La Palmera Alajuela Costa Rica Village - 2 km
Guatuso Alajuela Costa Rica Village - 3 km
La Muerte Alajuela Costa Rica Village - 3 km
San José San José Costa Rica Capital 330000 people 116 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
Upala UPL 56 32 km
Los Chiles LSL 35 Civ. Paved No 4200 40 km

Ports

Name LOCODE Country Distance
Puntarenas CRPAS Costa Rica 80 km
Caldera CRCAL Costa Rica 88 km

Dams

Reservoir Dam Name River Year Distance
Arenal Arenal Arenal 1978 24 km

More information

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