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

Magnitude-7.4 earthquake hits northeast Japan 4/20/2026 8:11:00 AM.

An earthquake with a preliminary magnitude of 7.4 has struck off the north-eastern coast of Japan, according to the Japan Meteorological Agency. It warned of a tsunami as high as 3 metres in the Iwate prefecture and parts of Hokkaido. Reute
...(more)
Strong 7.4-magnitude quake hits off Japan, tsunami warning issued Apri.. 4/20/2026 8:11:00 AM.

Strong 7.4-magnitude quake hits off Japan, tsunami warning issued. REUTERS. April 20, 2026 at 17:09 JST An ?earthquake ?with ?a preliminary ?magnitude of 7.4 ?struck ?off ?the northeastern coast of Japan on Monday ?afternoon, ?the ?Japan ?
...(more)
Tsunami alert for Japan after 7.4-magnitude earthquake - with 10ft wav.. 4/20/2026 8:11:00 AM.

Japanese authorities have issued a tsunami warning after an earthquake was detected off the country''s northeastern coast. A tsunami wave of three metres (10ft) is expected to hit Iwate prefecture and parts of Hokkaido ''immediately'', afte
...(more)
Tsunami warning issued after 7.4-magnitude earthquake hits off Japan 4/20/2026 8:10:00 AM.

TOKYO: An earthquake with a preliminary magnitude of 7.4 struck off the northeastern coast of Japan on Monday (Apr 20) afternoon, the Japan Meteorological Agency said. It warned of a tsunami as high as 3m in Iwate prefecture and parts of Ho
...(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),