Overall Green Earthquake alert in Tonga on 28 Jun 2024 13:00 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 5.7 in Tonga on 28 Jun 2024 13:00 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:	5.7M
Depth:	10 Km
Lat/Lon:	-20.6842 , -175.6828
Event Date:	28 Jun 2024 13:00 UTC 28 Jun 2024 01:00 Local
Exposed Population:	80 thousand in MMI&>=IV
Source:	NEIC us6000n8vk
Inserted at:	28 Jun 2024 13:33 UTC
INFORM Coping capacity of the alert score:	1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0		0
us6000n8vk	Scaled population (vector)	n.a
	C1 earthquake	n.a
	C2 earthquake	n.a
	Country Vulnerability	n.a
	INFORM_normalised	n.a

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
1579201		0	28 Jun 2024 13:00	5.8M, 10km	5.65	N/A (in MMI>=VII)		00:17	NEIC
1579203		0	28 Jun 2024 13:00	5.7M, 10km	4.86	80 thousand (in 100km)		00:32	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 98,000) . The alertlevel for this event is GREEN

Intensity	Population
	<1000 people
	<1000 people

Shakemaps Timeline

Alert	Shake id #	Score	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
	1	0	1579201	-175.636/-20.642	5.8	10	3.985	28 Jun 2024 13:21	00:21	(new episode)

Affected Provinces

Intensity	Region Province	Country	Population
	Tonga	Tonga	30000 people
	Tonga	Tonga	8700 people

Affected populated places. Areas of interest

Name	Country	City class	Population	Distance
Foui	Tonga	Village	-	61 km
Nukunuku	Tonga	Village	-	65 km
Houma	Tonga	Village	-	68 km
Nuku'alofa	Tonga	Capital	24000 people	70 km
Kolonga	Tonga	Village	-	80 km
Mua	Tonga	Village	-	80 km
Fatumu	Tonga	Village	-	83 km
Niutoua	Tonga	Village	-	84 km
Fuaamotu	Tonga	Village	-	86 km
Ohonua	Tonga	Village	1200 people	106 km
Pangai	Tonga	Village	1700 people	162 km
Pea	Tonga	Village	-	72 km

see full list

Critical infrastructure

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

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)	Distance
Fua'amotu International	TBU	38	Civ.	Paved	Yes	8700	84 km
Eua Kaufana	EUA	unknown				0	108 km
Haapai	HPA	12	Civ.	Unpaved	Yes	3900	166 km

Ports

Name	LOCODE	Country	Distance
Nuku'alofa	TOTBU	Tonga	70 km
Eua Island		Tonga	110 km
Pangai	TOPAN	Tonga	163 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.
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