M 4.6 in Tonga on 23 Jan 2021 19:38 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 1252855
Earthquake Magnitude: 4.6M
Depth: 30.89 Km
Lat/Lon: -20.5614 , -174.5779
Event Date: 23 Jan 2021 19:38 UTC
24 Jan 2021 08:38 Local
Exposed Population:
About 85000 people within 100km
Inserted at: 23 Jan 2021 23:30 UTC
INFORM Coping capacity:
4.6 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000d2qq Scaled population (vector) 4.06  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 0.94  
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

Articles: 8 | About casualties: 0 | Last hour: 0

Seismic activity: 5.4 magnitude earthquake recorded in Ono-i-Lau regio ... Sun, 24 Jan 2021 04:34:00 +0100.

The map showing the epicentre of the 5.4 magnitude earthquake that was recorded in the Ono-i-Lau region last night. Image: SUPPLIED. A 5.4 magnitude earthquake was recorded in the Ono-i-Lau region last night. The Seismology Unit of Fiji’s
...(more)
Mag. 4.8 earthquake - South Pacific Ocean, 3.4 km west of Hihifo, Niua ... Tue, 19 Jan 2021 11:13:00 +0100.

The United States Geological Survey (USGS) reported a magnitude 4.8 quake in Tonga near Hihifo, Niuas, only 24 minutes ago. The earthquake hit late at night on Tuesday 19 January 2021 at 10:24 pm local time at an intermediate to considerabl
...(more)
Tonga: Magnitude-5.2 offshore earthquake occurs off Pangai Jan. 16Sat, 16 Jan 2021 10:50:00 +0100.

Magnitude-5.1 earthquake strikes in South Pacific Ocean, off central Tonga, at around 1936 Jan. 16. No tsunami warning issued.
Slow deformation event between large intraslab earthquakes at the Tong ... Fri, 08 Jan 2021 13:26:00 +0100.

Slow deformations associated with a subducting slab can affect quasi-static displacements and seismicity over a wide range of depths. Here, we analyse the seismotectonic activities in the Tonga subduction zone, which is the world’s most act
...(more)

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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

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),