M 4.9 in Tonga from 02 Jul 2008 12:46 UTC to 12:46

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: Km
Lat/Lon: -19.25 , -177.5
Event Date: 02 Jul 2008 12:46 UTC
02 Jul 2008 00:46 Local
Exposed Population:
about 500 people within 100km
Source: GEOFON
Inserted at: 02 Jul 2008 13:00 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
GEOFON 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
42094 0.5 02 Jul 2008 12:46 4.9M, 561km N/A Few people (in 100km) 00:14 GEOFON
42095 0.5 02 Jul 2008 12:46 4.6M, 576.4km N/A Few people (in 100km) 00:24 NEIC
42096 0.5 02 Jul 2008 12:46 4.6M, 576km N/A Few people (in 100km) 01:40 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 <1000 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

Region Province Country Population
Tonga Tonga 98000 people
Fiji Fiji 760000 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.