Overall Green Earthquake alert in Tonga on 05 Apr 2024 20:32 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 5.6 in Tonga on 05 Apr 2024 20:32 UTC

Hazard models

Rapid Impact

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:	5.6M
Depth:	119.3 Km
Lat/Lon:	-18.133 , -174.3275
Event Date:	05 Apr 2024 20:32 UTC 06 Apr 2024 09:32 Local
Exposed Population:	20 thousand in MMI IV
Source:	NEIC us7000maah
Inserted at:	06 Apr 2024 19:02 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
us7000maah	Scaled population (raster)	0
	C1 shakemap	0
	C2 shakemap	0
	Country Vulnerability	0
	INFORM_normalised	0

Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1563318		0	05 Apr 2024 20:32	5.6M, 116.4km	4.04	N/A (in MMI>=VII)		00:21	NEIC
1563519		0	05 Apr 2024 20:32	5.6M, 119.3km	4.03	N/A (in MMI>=VII)		22:30	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 10,644) . The alertlevel for this event is GREEN

Intensity	Population
	no people

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1563318	-174.25/-18.202	5.6	116.4	4.041	05 Apr 2024 20:59	00:27	(new episode)
2	1563318	-174.25/-18.202	5.6	116.4	4.041	05 Apr 2024 22:36	02:04	(upd of #1)
3	1563519	-174.328/-18.133	5.6	119.3	3.986	06 Apr 2024 19:45	23:12	(new episode)
4	1563519	-174.328/-18.133	5.6	119.3	3.99	06 Apr 2024 20:45	1d 00:12	(upd of #3)

Affected Provinces

Intensity	Region Province	Country	Population
	Tonga	Tonga	11000 people

Affected populated places. Areas of interest

Intensity	Name	Region Province	Country	City class	Population	Distance
	Neiafu		Tonga	Village	4300 people	68 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity	Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)	Distance
	Vavau International	VAV	72	Civ.	Unpaved	Yes	5500	63 km

Ports

Intensity	Name	LOCODE	Country	Distance
	Neiafu	TONEI	Tonga	68 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.