Overall Green Earthquake alert in Tonga on 20 Apr 2017 22:59 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 5.4 in Tonga on 20 Apr 2017 22:59 UTC

Event summary

This earthquake can have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID	EQ 1110762
Earthquake Magnitude:	5.4M
Depth:	10 Km
Lat/Lon:	-20.5682 , -173.6444
Event Date:	20 Apr 2017 22:59 UTC 20 Apr 2017 10:59 Local
Exposed Population:	Few people within 100km
Inserted at:	20 Apr 2017 23:18 UTC
INFORM Coping capacity:	1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0		0
us10008jeq	Scaled population (vector)	0
	C1 earthquake	1
	C2 earthquake	0
	Country Vulnerability	0
	INFORM_normalised	1

Maximum expected impact using different data sources.

Virtual OSOCC

Meteo assessment

Satellite products

Analytical products

Detailed event map. European Union, 2024. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

4:09 Chilenos monitoram atividade sísmica 4/24/2017 10:17:00 PM.

24 de abril de 2017, 16:09 Santiago do Chile, 24 abr (Prensa Latina) O Centro Sismológico da Universidade do Chile monitora hoje a sequência de tremores que desde a noite do sábado mantém os habitantes de Valparaíso em alerta. Sergio Bar

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Analytical products

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (41), (3), NEIC (4), OCHA (1), INGV (1), WMO (1), INFORM (2), USGS (2),

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