M 5.6 in Japan from 26 Aug 2026 19:21 UTC to 19:21

Hazard models

Rapid Impact
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 5.6M
Depth: 10 Km
Lat/Lon: 38.1292 , 143.8477
Event Date: 26 Aug 2026 19:21 UTC
27 Aug 2026 05:21 Local
Exposed Population: 100 thousand in MMI III
Source: NEIC us7000tc18
Inserted at: 26 Aug 2026 19:39 UTC
INFORM Coping capacity of the alert score
1.1 (Japan)

GDACS Score

For more info on GDACS score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us7000tc18 Scaled population (raster) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.

Episode Timeline

IDLevelScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1729395 0 26 Aug 2026 19:21 5.6M, 10km 2.95 N/A (in MMI>=VII) 00:18 NEIC
1729589 0 26 Aug 2026 19:21 5.6M, 16km 2.91 N/A (in MMI>=VII) 20:53 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

Radius Population
100 km no people
75 km no people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.