M 5.4 in Japan on 11 Sep 2015 20:49 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: 5.4M
Depth: 47.22 Km
Lat/Lon: 35.4867 , 139.9476
Event Date: 11 Sep 2015 20:49 UTC
12 Sep 2015 05:49 Local
Exposed Population:
37000216 people within 100km
Source: NEIC
Inserted at: 11 Sep 2015 21:06 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.6 0.6
Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1096162 0.6 11 Sep 2015 20:49 5.4M, 47.22km N/A 37 million (in 100km) 00:16 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) . The nearest places are Yokohama, Chiba, Tokyo, Kawasaki, and Anegasaki.

Radius Population
100 km 37 million people
75 km 33.6 million people
50 km 24.5 million people
20 km 1 million people
10 km 120000 people
5 km 14000 people
2 km no people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Anegasaki Chiba Japan Village - 8 km
Chiba Chiba Japan Major city 920000 people 21 km
Tokyo Tokyo Japan Capital 8.1 million people 23 km
Kawasaki Kanagawa Japan Major city 1.3 million people 23 km
Yokohama Kanagawa Japan Major city 3.6 million people 30 km

see full list

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Kisarazu 3 Mil. Paved Yes 6000 10 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 17 km

Ports

Name LOCODE Country Distance
Kisarazu JPKZU Japan 11 km
Goi JPGOI Japan 15 km
Kawasaki JPKWS Japan 18 km
Anegasaki JPANE Japan 19 km
Chiba JPCHB Japan 19 km

Dams

Reservoir Dam Name River Year Distance
Yamakura Yamakura Yamakuragawa 1964 17 km

More information

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