M 4.6 in Wallis and Futuna on 21 Sep 2021 04:42 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: 4.6M
Depth: 320.43 Km
Lat/Lon: -15.8834 , -175.311
Event Date: 21 Sep 2021 04:42 UTC
20 Sep 2021 16:42 Local
Exposed Population:
Few people affected in 100km
Source: NEIC us7000fd2d
Inserted at: 22 Sep 2021 04:55 UTC
INFORM Coping capacity of the alert score
1.1 (Wallis & Futuna)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000fd2d Scaled population (vector) 0  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1397780 0 21 Sep 2021 04:42 5M, 327.73km N/A Few people (in 100km) 00:14 NEIC
1397962 0 21 Sep 2021 04:42 4.6M, 320.43km N/A Few people (in 100km) 1d 00:13 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 Wallis and Futuna , of Wallis & Futuna (population 14,000) . The nearest places are and Esia.

Radius Population
100 km <1000 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
Wallis & Futuna Wallis and Futuna 14000 people
Tonga Tonga 98000 people
Samoa Samoa 160000 people
Fiji Fiji 760000 people

Affected populated places

Name Region Province Country City class Population Distance
Esia Fiji Village - 49 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.