M 5.1 in Tonga on 02 Dec 2012 13:32 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.

Updated: this report is based on episode 1.

Earthquake Magnitude: 5.1M
Depth: 6 Km
Lat/Lon: -20.6338 , -174.235
Event Date: 02 Dec 2012 13:32 UTC
02 Dec 2012 01:32 Local
Exposed Population:
About 5000 people within 100km
Source: NEIC usc000e2fx
Inserted at: 02 Dec 2012 14:59 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000e2fx 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
121215 0.5 02 Dec 2012 13:32 5M, 43.9km N/A 10 thousand (in 100km) 00:21 NEIC
121216 0.5 02 Dec 2012 13:32 5M, 6km N/A 5 thousand (in 100km) 01:24 NEIC
121217 0.5 02 Dec 2012 13:32 5.1M, 6km N/A 5 thousand (in 100km) 01:26 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 Tonga , of Tonga (population 98,000) .

Radius Population
100 km 16000 people
75 km <1000 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
Tonga Tonga 98000 people
Niue Niue 2000 people

Critical infrastructure

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

Ports

Name LOCODE Country Distance
Eua Island Tonga 95 km

More information

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