M 5.1 in Tonga from 25 Feb 2010 11:26 UTC to 11:26

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: 5.1M
Depth: 80 Km
Lat/Lon: -23.73 , -175.66
Event Date: 25 Feb 2010 11:26 UTC
24 Feb 2010 23:26 Local
Exposed Population:
no people within 100km
Source: EMSC
Inserted at: 25 Feb 2010 11:57 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
EMSC 0.5 0.5
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
78579 0.5 25 Feb 2010 11:26 5.2M, 10km N/A No people affected (in 100km) 00:17 GEOFON
78580 0.5 25 Feb 2010 11:26 5M, 107km N/A No people affected (in 100km) 00:24 EMSC
78581 0.5 25 Feb 2010 11:26 5M, 107km N/A No people affected (in 100km) 00:30 NEIC
78582 0.5 25 Feb 2010 11:26 5.1M, 80km N/A No people affected (in 100km) 00:30 EMSC
78585 0.5 25 Feb 2010 11:26 5.1M, 80km N/A No people affected (in 100km) 01:17 EMSC
78619 0.5 25 Feb 2010 11:26 5M, 105km N/A No people affected (in 100km) 05:29 EMSC
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 no people
75 km no people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Country Region Province Population
Tonga Tonga 98000 people

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.