M 4.6 in Tonga on 27 Jul 2026 01:05 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 1554277
Earthquake Magnitude: 4.6M
Depth: 80.5 Km
Lat/Lon: -16.5628 , -173.9167
Event Date: 27 Jul 2026 01:05 UTC
26 Jul 2026 13:05 Local
Exposed Population:
1 thousand in MMI III
Inserted at: 27 Jul 2026 01:23 UTC
INFORM Coping capacity:
1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us7000t3kd Scaled population (vector) 0  
  C1 rapid impact 0  
  C2 rapid impact 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Detailed event map. European Union, 2026. 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

5.4-magnitude quake hits South of Tonga Islands -- GFZ 7/29/2026 9:36:00 PM.

BEIJING, July 30 (Xinhua) -- An earthquake with a magnitude of 5.4 jolted South of Tonga Islands at 2052 GMT on Wednesday, the GFZ German Research Centre for Geosciences said. The epicenter, with a depth of 10 km, was initially determined t
...(more)
5.4 magnitude quake hits South of Tonga Islands GFZ 7/29/2026 9:33:00 PM.

BEIJING, July 30 (Xinhua) -- An earthquake with a magnitude of 5.4 jolted South of Tonga Islands at 2052 GMT on Wednesday, the GFZ German Research Centre for Geosciences said. The epicenter, with a depth of 10 km, was initially determined t
...(more)
5.4-magnitude quake hits South of Tonga Islands -- GFZ 7/29/2026 9:22:00 PM.

BEIJING, July 30 (Xinhua) -- An earthquake with a magnitude of 5.4 jolted South of Tonga Islands at 2052 GMT on Wednesday, the GFZ German Research Centre for Geosciences said. The epicenter, with a depth of 10 km, was initially determined t
...(more)
5.4-magnitude quake hits South of Tonga Islands -- GFZ 7/29/2026 9:21:00 PM.

BEIJING, July 30 (Xinhua) -- An earthquake with a magnitude of 5.4 jolted South of Tonga Islands at 2052 GMT on Wednesday, the GFZ German Research Centre for Geosciences said. The epicenter, with a depth of 10 km, was initially determined t
...(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), NEIC (4), OCHA (1), WMO (1), (2), INFORM (2), USGS (2),