M 5.5 in Tonga on 29 Nov 2020 23:56 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: 5.5M
Depth: 74.68 Km
Lat/Lon: -17.0114 , -174.7316
Event Date: 29 Nov 2020 23:56 UTC
29 Nov 2020 11:56 Local
Exposed Population: No people within 100km
Source: NEIC us7000cl0j
Inserted at: 30 Nov 2020 00:15 UTC
INFORM Coping capacity of the alert score
1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000cl0j Scaled population (raster) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1345553 0 29 Nov 2020 23:56 5.5M, 74.68km 3.29 N/A (in MMI>=VII) 00:18 NEIC
1345558 0 29 Nov 2020 23:56 5.6M, 10km 3.44 N/A (in MMI>=VII) 00:47 NEIC
1345583 0 29 Nov 2020 23:56 5.7M, 10km 3.32 N/A (in MMI>=VII) 04:31 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 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

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