M 4.9 in Japan on 20 Sep 2017 09:01 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: 4.9M
Depth: 51.74 Km
Lat/Lon: 30.5728 , 141.0335
Event Date: 20 Sep 2017 09:01 UTC
20 Sep 2017 18:01 Local
Exposed Population:
Few people within 100km
Source: NEIC us2000arig
Inserted at: 20 Sep 2017 09:22 UTC
INFORM Coping capacity of the alert score
1.1 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us2000arig Scaled population (vector) -0.4  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1181283 0 20 Sep 2017 09:01 4.9M, 51.74km N/A Few people (in 100km) 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

The earthquake happened in Japan , Region of Kanto (population 38,543,000) .

Radius Population
100 km <1000 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

Region Province Country Population
Kanto Japan 38.5 million people

Critical infrastructure

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

Ports

Name LOCODE Country Distance
Tori Island Japan 70 km

More information

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