M 6.5 in Japan on 26 Mar 2026 14:18 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: 6.5M
Depth: 9.5 Km
Lat/Lon: 39.4462 , 143.3717
Event Date: 26 Mar 2026 14:18 UTC
27 Mar 2026 00:18 Local
Exposed Population: 1.6 million in MMI IV
Source: NEIC us7000s7u4
Inserted at: 26 Mar 2026 14:37 UTC
INFORM Coping capacity of the alert score: 1.1 (Japan)

GDACS Score

For more info on GDACS score click here.
  Earthquake
(Rapid Impact)		 Tsunami GDACS score
NEIC 0 0.2 0.2
us7000s7u4 Scaled population (raster) 0 Max wave alert 0.23m  
  C1 rapid impact 0 Max wave realtime 0.23m  
  C2 rapid impact 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
Maximum expected impact using different data sources.

The green area correspond to areas affected by strong shaking (MMI VI or higher) according to the simulation.


Episode Timeline

IDLevelScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1695357 0 26 Mar 2026 14:18 5.8M, 16.7km 3.2 N/A (in MMI>=VII) N/A 00:10 ALASKA EC
1695358 0 26 Mar 2026 14:18 5.9M, 24.8km 3.67 N/A (in MMI>=VII) N/A 00:10 ALASKA EC
1695359 0 26 Mar 2026 14:18 5.9M, 31.9km 3.69 N/A (in MMI>=VII) N/A 00:11 ALASKA EC
1695360 0 26 Mar 2026 14:18 5.9M, 32.4km 3.69 N/A (in MMI>=VII) N/A 00:13 ALASKA EC
1695363 0 26 Mar 2026 14:18 6.5M, 9.5km 3.75 N/A (in MMI>=VII) 0.2m (at 00:23) 00:18 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.

Rapid Impact

The results presented below are calculated with the ShakeMap open source software (USGS) using only earthquake hypocenter information to provide a rapid estimation of the ground motion and shaking intensity without taking into account any instrumental observations or earthquake source scaling laws.

Exposed population

The earthquake happened in unknowed a zone. The alertlevel for this event is GREEN

Intensity Population
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.