M 7.7 Earthquake and Tsunami (1.8 m) in Chile from 16 Sep 2015 22:54 UTC to 22:54

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 7.7M
Depth: 10 Km
Lat/Lon: -31.55 , -71.59
Event Date: 16 Sep 2015 22:54 UTC
16 Sep 2015 19:54 Local
Exposed Population: 140000 people within 100km
Source: GEOFON us20003k7a
Inserted at: 16 Sep 2015 23:00 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
GEOFON 0.7 2 1.3
us20003k7a Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 1.75m  
  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
1097284 1.3 16 Sep 2015 22:54 7.7M, 10km N/A 150 thousand (in 100km) 1.8m (at 00:22) 00:06 GEOFON
1097285 1.5 16 Sep 2015 22:54 7.9M, 33km N/A 120 thousand (in 100km) 2m (at 00:12) 00:08 NTWC    
1097294 2 16 Sep 2015 22:54 7.9M, 33km N/A No people affected (in 100km) 2.1m (at 00:22) 00:17 PTWC
1097296 1.3 16 Sep 2015 22:54 7.9M, 8.29km N/A 2.8 million (in MMI>=VII) 1.7m (at 00:32) 00:20 NEIC
1097301 1.7 16 Sep 2015 22:54 8.3M, 12.52km 8.28 2.8 million (in MMI>=VII) 2.4m (at 00:14) 00:29 NEIC
1097314 2.1 16 Sep 2015 22:54 8.3M, 25km 8.29 2.8 million (in MMI>=VII) 3.3m (at 01:00) 00:44 NEIC
1097344 3 16 Sep 2015 22:54 8.3M, 25km 8.37 560 thousand (in MMI>=VII) 3.3m (at 00:40) 01:53 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 Coquimbo (population 520,420) . The nearest places are Valpara�so, Angostura, and Huentelauqu�n.

Radius Population
100 km 150000 people
75 km 110000 people
50 km 55000 people
20 km 4400 people
10 km 1400 people
5 km <1000 people
2 km no people

Affected Provinces

Region Province Country Population
Coquimbo Chile 520000 people

Affected populated places

Name Region Province Country City class Population Distance
Angostura Coquimbo Chile Village - 7 km
Huentelauqu�n Coquimbo Chile Village - 7 km
Valpara�so Valparaiso Chile Major city 270000 people 163 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
Auco 431 46 km
Santa Rosa de Tabali 239 99 km

Ports

Name LOCODE Country Distance
Los Vilos CLLOS Chile 40 km

Dams

Reservoir Dam Name River Year Distance
Cogoti Cogoti Huatulame 1939 76 km

More information

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