M 4.6 in Fiji on 31 Mar 2021 17:39 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: 581.08 Km
Lat/Lon: -18.3469 , -177.5616
Event Date: 31 Mar 2021 17:39 UTC
31 Mar 2021 05:39 Local
Exposed Population:
About 100 people within 100km
Source: NEIC us6000dy06
Inserted at: 31 Mar 2021 18:01 UTC
INFORM Coping capacity of the alert score
1.1 (Fiji)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000dy06 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
1367924 0 31 Mar 2021 17:39 4.6M, 581.08km N/A Few people (in 100km) 00:21 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 Fiji , of Fiji (population 755,000) .

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
Fiji Fiji 760000 people
Tonga Tonga 98000 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.