M 4.6 in Samoa on 05 May 2021 05:05 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: 67.89 Km
Lat/Lon: -15.5822 , -173.578
Event Date: 05 May 2021 05:05 UTC
04 May 2021 17:05 Local
Exposed Population:
About 800 people within 100km
Source: NEIC us7000e08x
Inserted at: 05 May 2021 05:26 UTC
INFORM Coping capacity of the alert score
1.1 (Samoa)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000e08x Scaled population (vector) 3.23  
  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
1373641 0 05 May 2021 05:05 4.6M, 67.89km N/A Few people (in 100km) 00:20 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 Samoa , of Samoa (population 159,000) . The nearest places are Falehau, and Hihifo.

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
Samoa Samoa 160000 people
American Samoa American Samoa 53000 people
Tonga Tonga 98000 people
Wallis & Futuna Wallis and Futuna 14000 people

Affected populated places

Name Region Province Country City class Population Distance
Falehau Tonga Village - 44 km
Hihifo Tonga Village <1000 people 47 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.