M 4.9 in Tonga Islands on 23 Oct 2014 02:15 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: 4.9M
Depth: 57.71 Km
Lat/Lon: -15.95 , -173.86
Event Date: 23 Oct 2014 02:15 UTC
23 Oct 2014 15:15 Local
Exposed Population:
About 1755 people within 100km
Source: NEIC
Inserted at: 23 Oct 2014 02:33 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
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
1063038 0 23 Oct 2014 02:15 4.9M, 57.71km N/A 2 thousand (in 100km) 00:17 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 and Hihifo.

Radius Population
100 km 1800 people
75 km 1800 people
50 km 1800 people
20 km 1800 people
10 km <1000 people
5 km no people
2 km no people

Affected Provinces

Country Region Province Population
Samoa Samoa 160000 people

Affected populated places

Name Region Province Country City class Population Distance
Hihifo Tonga Village <1000 people 11 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.