M 6 in Japan on 23 Aug 2026 13:44 UTC

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: 6.0M
Depth: 42.9 Km
Lat/Lon: 41.8344 , 142.8255
Event Date: 23 Aug 2026 13:44 UTC
23 Aug 2026 23:44 Local
Exposed Population: 20 thousand in MMI V
Source: NEIC us6000tmz6
Inserted at: 23 Aug 2026 14:05 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
us6000tmz6 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
1728702 0 23 Aug 2026 13:44 6M, 42.9km 5.42 N/A (in MMI>=VII) 00:20 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 84000 people
75 km 60000 people
50 km 25000 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.