M 7.4 Earthquake and Tsunami (1 m) in Japan on 20 Apr 2026 07:53 UTC

Event summary

This earthquake can have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID EQ 1536386
Earthquake Magnitude: 7.4M
Glide number: EQ-2026-000057-JPN
Depth: 35 Km
Lat/Lon: 39.9532 , 143.0462
Event Date: 20 Apr 2026 07:53 UTC
20 Apr 2026 17:53 Local
Exposed Population: 330 thousand in MMI VI
Inserted at: 20 Apr 2026 08:12 UTC
INFORM Coping capacity:
1.1 (Japan)
Maximum Wave Height observed: 0.16 m

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 1 1
us6000sri7 Scaled population (raster) 1.4 Max wave scenario 0.61m  
  C1 shakemap -0.59 Max wave realtime 1.01m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.57      
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

Japan eases tsunami alert after powerful quake strikes 4/20/2026 1:15:00 PM.

An earthquake with a magnitude of 7.5 struck off the ?northeast coast of Japan, prompting authorities to urge residents to stay away from coastal areas where tsunami waves of ?up to three metres were expected. Following the quake, the gov
...(more)
Sismo de 7.5 en Japón enciende alerta de tsunami en costas 4/20/2026 1:15:00 PM.

Un terremoto de magnitud 7.5 golpeó este lunes la costa oriental del centro y noreste de Japón , con una profundidad de 10 kilómetros, y llevó a las autoridades niponas a activar la alerta por tsunami, según informó la Agencia Meteorológica
...(more)
Japan eases tsunami alert after powerful quake strikes 4/20/2026 1:15:00 PM.

An earthquake with a magnitude of 7.5 struck off the ?northeast coast of Japan, prompting authorities to urge residents to stay away from coastal areas where tsunami waves of ?up to three metres were expected. Following the quake, the gov
...(more)
Terremoto de magnitud 7.5 sacude a Japón 4/20/2026 1:14:00 PM.

Esta foto muestra un mensaje de advertencia en una pantalla de una transmisión en vivo de NHK con alerta de tsunami después de que un terremoto azotara el norte de Japón. Crédito: AFP. Un potente terremoto sacudió la costa norte de Japón,
...(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 (88), NEIC (5), OCHA (1), WMO (2), USGS (5), (3), INFORM (4),