M 4.6 in Japan on 26 Jul 2013 13:28 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This is a preliminary assessment. The final GDACS Alert Level has been/will be published using more detailed information.

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 4.6M
Depth: 111.3 Km
Lat/Lon: 25.4017 , 125.0384
Event Date: 26 Jul 2013 13:28 UTC
26 Jul 2013 21:28 Local
Exposed Population:
About 59409 people within 100km
Source: NEIC
Inserted at: 26 Jul 2013 14:17 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC n.a n.a
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
1000841 n.a 26 Jul 2013 13:28 4.6M, 111.3km N/A 60 thousand (in 100km) 00:48 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 Okinawa (population 1,242,315) .

Radius Population
100 km 59000 people
75 km 39000 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
Okinawa Japan 1.2 million people

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
Shimojishima SHI 16 Civ. Paved Yes 9800 65 km
Hirara MMY 45 Civ. Paved Yes 6500 73 km

Ports

Name LOCODE Country Distance
Hirara Japan 70 km
Myako Island Japan 81 km

More information

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