M 4.9 in Japan on 18 Apr 2026 05:54 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 1536006
Earthquake Magnitude: 4.9M
Depth: 10 Km
Lat/Lon: 36.5388 , 137.9099
Event Date: 18 Apr 2026 05:54 UTC
18 Apr 2026 14:54 Local
Exposed Population:
2 thousand in MMI VI
Inserted at: 18 Apr 2026 06:11 UTC
INFORM Coping capacity:
1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us6000sr2i 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

Japan earthquake triggers tsunami warnings as coastal evacuations begi.. 4/20/2026 12:04:00 PM.

A powerful earthquake measuring magnitude 7.5 struck this morning, Monday April 20, off the coast of central Japan, prompting tsunami warnings, evacuation orders and transport disruption across a wide stretch of the country. According to th
...(more)
2026.04.20 Topics Products / Services IR Sustainability Event Disaster.. 4/20/2026 12:01:00 PM.

Regarding the earthquake that occurred in Tohoku around 16:53 on April 20, the situation at the Tokyo Electron Technology Solutions Tohoku Plant and Tokyo Electron Miyagi Headquarter is as follows: We have been able to confirm that the cons
...(more)
Japan Issues Mega-Quake Advisory After Powerful 7.5 Earthquake Trigger.. 4/20/2026 12:00:00 PM.

email: Tokyo: Japan issued an advisory on Monday warning of an increased risk of a possible mega-quake along its northern coast after a powerful 7.5-magnitude earthquake struck earlier in the day. The Japan Meteorological Agency and the Cab
...(more)
Philippines not affected by tsunami threat following 7.4-magnitude Jap.. 4/20/2026 12:00:00 PM.

There was no tsunami threat in the Philippines following a 7.4-magnitude earthquake that struck northern Japan on Monday morning, the Philippine Institute of Volcanology and Seismology (Phivolcs) assured. The quake hit Japan at 4.53pm local
...(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),