Overall Green Earthquake alert in Tonga on 25 Dec 2021 00:50 UTC

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

M 4.9 in Tonga on 25 Dec 2021 00:50 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 1303297
Earthquake Magnitude:	4.9M
Depth:	417.47 Km
Lat/Lon:	-19.743 , -177.6812
Event Date:	25 Dec 2021 00:50 UTC 24 Dec 2021 12:50 Local
Exposed Population:	Few people affected in 100km
Inserted at:	25 Dec 2021 01:09 UTC
INFORM Coping capacity:	1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0		0
us6000gf4u	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, 2025. 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

Tonga: Magnitude-5.6 offshore earthquake east of Nuku'alofa, early Dec.. 12/27/2021 1:55:00 PM.

Event. A magnitude-5.6 offshore earthquake occurred in Tonga at 00:34 Dec. 28. The epicenter was about 94 km (58 miles) east southeast of Nuku'alofa. The tremor occurred at a depth of about 100 km (60 miles), and light shaking was probably

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Magnitude 5.3 earthquake strikes near ‘Ohonua, Ohonua, ?Eua, Tonga 12/27/2021 1:28:00 PM.

A magnitude 5.3 earthquake near 'Ohonua, Ohonua, ?Eua, Tonga, was reported only 20 minutes ago by the German Research Centre for Geosciences (GFZ), considered one of the key international agencies that monitor seismic activity worldwide. Th

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View more news

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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