M 5.1 in Tonga on 29 Apr 2025 19:16 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 1479494
Earthquake Magnitude: 5.1M
Depth: 10 Km
Lat/Lon: -20.8508 , -173.8528
Event Date: 29 Apr 2025 19:16 UTC
29 Apr 2025 07:16 Local
Exposed Population:
1 thousand in MMI III
Inserted at: 29 Apr 2025 19:40 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
us7000pvxz 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, 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

Huge underwater volcano is ‘swelling and about to blow’ at any moment 5/3/2025 11:34:00 AM.

A massive underwater volcano appears on the verge of an enormous eruption which could trigger thousands of earthquakes. Magma is building up beneath the mile-wide surface of the Axial Seamount, which is 300 miles off the coast of The volcan
...(more)
Underwater volcano in Pacific Northwest could erupt ''any day now'' 5/1/2025 6:16:00 PM.

The most active volcano in the Pacific Northwest could erupt ''any day now,'' experts warn. The Axial Seamount is a mile-wide underwater volcano that sits 300 miles off the coast of Oregon and more than 4,900 feet below the surface of the P
...(more)
Huge underwater volcano off major US coast is set up erupt ''any day''.. 5/1/2025 5:14:00 PM.

The most active volcano in the Pacific Northwest scientists have warn. is a mile-wide underwater volcano that sits 300 miles off the coast of Oregon and more than 4,900 feet below the surface of the Pacific Ocean. , triggering roughly 8,000
...(more)
5.1-magnitude quake hits 126 km SSE of Pangai, Tonga: USGS 4/29/2025 11:41:00 PM.

NEW YORK, April 29 (Xinhua) -- An earthquake with a magnitude of 5.1 jolted 126 km SSE of Pangai, Tonga, at 19:16:30 GMT on Tuesday, the U.S. Geological Survey said. The epicenter, with a depth of 10.0 km, was initially determined to be at
...(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),