M 6.1 in Japan on 20 Sep 2017 16:37 UTC

Hazard models

EQ parameters
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: 6.1M
Depth: 10 Km
Lat/Lon: 37.9816 , 144.6693
Event Date: 20 Sep 2017 16:37 UTC
21 Sep 2017 02:37 Local
Exposed Population: No people within 100km
Source: NEIC us2000arxv
Inserted at: 20 Sep 2017 16:57 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
us2000arxv Scaled population (vector) 0 Max wave scenario 0m  
  C1 shakemap 0 Max wave realtime 0m  
  C2 shakemap 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
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
1181331 0 20 Sep 2017 16:37 6.1M, 10km N/A N/A (in MMI>=VII) 0m (at 00:00) 00:19 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 Japan ,of Tohoku (population 65,066) . The alertlevel for this event is GREEN

Intensity Population
no people
no people
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1181331 37.982/144.669 6.1 10 2.68 20 Sep 2017 16:58 00:21 (new episode)
2 0 1181331 37.982/144.669 6.1 10 2.68 20 Sep 2017 18:39 02:02 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
Tohoku Japan 65000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Kamata Miyagi Japan Village - 301 km
Kamimachi Miyagi Japan Village - 307 km
Nishino Miyagi Japan Village - 312 km
Sanuma Miyagi Japan City - 313 km

see full list


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.