M 6.3 in Japan on 29 Nov 2021 12:40 UTC

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: 6.3M
Depth: 6.14 Km
Lat/Lon: 31.1809 , 142.4851
Event Date: 29 Nov 2021 12:40 UTC
29 Nov 2021 21:40 Local
Exposed Population: Less then 100 people in MMI V
No people affected in 100km
Source: NEIC us7000fxyq
Inserted at: 29 Nov 2021 13:16 UTC
INFORM Coping capacity of the alert score: 1.1 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0 0 0
us7000fxyq Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1412649 0 29 Nov 2021 12:40 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:13 PTWC
1412650 0 29 Nov 2021 12:40 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:16 NTWC
1412652 0 29 Nov 2021 12:40 6.4M, 19.85km 2.95 less than 100 (in MMI>=VII) 0m (at 00:00) 00:26 NEIC
1412654 0 29 Nov 2021 12:40 6.3M, 6.14km 2.82 less than 100 (in MMI>=VII) 0m (at 00:00) 00:35 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

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

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1412654 31.2/142.494 6.4 19.9 2.952 29 Nov 2021 13:04 00:23 (new episode)
2 0 1412654 31.181/142.485 6.3 6.1 2.875 29 Nov 2021 13:47 01:07 (upd of #1)
3 0 1412654 31.181/142.485 6.3 6.1 2.875 29 Nov 2021 14:45 02:04 (upd of #2)
4 0 1412654 31.181/142.485 6.3 6.1 2.817 30 Nov 2021 12:45 1d 00:04 (upd of #3)

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.