M 5.7 in Samoa on 25 Sep 2012 03:06 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: 5.7M
Depth: 104.5 Km
Lat/Lon: -15.472 , -173.923
Event Date: 25 Sep 2012 03:06 UTC
24 Sep 2012 15:06 Local
Exposed Population:
About 1057 people within 100km
Source: NEIC usc000cvd1
Inserted at: 25 Sep 2012 04:08 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000cvd1 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
119855 n.a 25 Sep 2012 03:06 5M, 122.1km N/A 1 thousand (in 100km) 00:19 NEIC
119856 0.5 25 Sep 2012 03:06 5.7M, 104.5km N/A 1 thousand (in 100km) 01:01 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 Samoa , of Samoa (population 159,000) . The nearest places are Falehau, and Hihifo.

Radius Population
100 km 1100 people
75 km 1100 people
50 km <1000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Samoa Samoa 160000 people
Tonga Tonga 98000 people
Wallis & Futuna Wallis and Futuna 14000 people
American Samoa American Samoa 53000 people

Affected populated places

Name Region Province Country City class Population Distance
Falehau Tonga Village - 52 km
Hihifo Tonga Village <1000 people 54 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

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