M 4.5 in Japan on 23 May 2016 16:42 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: 4.5M
Depth: 56.43 Km
Lat/Lon: 35.6023 , 140.2952
Event Date: 23 May 2016 16:42 UTC
24 May 2016 01:42 Local
Exposed Population:
35838452 people within 100km
Source: NEIC
Inserted at: 23 May 2016 20:30 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
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
1129130 0 23 May 2016 16:42 4.5M, 56.43km N/A 35.8 million (in 100km) 03:47 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 Chiba, Togane, and Oami.

Radius Population
100 km 35.8 million people
75 km 25.3 million people
50 km 8.4 million people
20 km 1.3 million people
10 km 200000 people
5 km 47000 people
2 km 3200 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Togane Chiba Japan Village 55000 people 7 km
Oami Chiba Japan Village - 8 km
Chiba Chiba Japan Major city 920000 people 18 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
Shimoshizu 30 16 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 20 km

Ports

Name LOCODE Country Distance
Chiba JPCHB Japan 19 km
Anegasaki JPANE Japan 20 km

Dams

Reservoir Dam Name River Year Distance
Yamakura Yamakura Yamakuragawa 1964 21 km

More information

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