M 4.6 in Japan on 21 Oct 2013 03:33 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: 4.6M
Depth: 62.02 Km
Lat/Lon: 42.29 , 142.96
Event Date: 21 Oct 2013 03:33 UTC
21 Oct 2013 12:33 Local
Exposed Population:
425198 people within 100km
Source: NEIC
Inserted at: 21 Oct 2013 04:20 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
1017592 0 21 Oct 2013 03:33 4.6M, 62.02km N/A 430 thousand (in 100km) 00:47 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 Hokkaido (population 5,808,054) . The nearest places are Sapporo, Samani, Nishicha, and Panke.

Radius Population
100 km 430000 people
75 km 310000 people
50 km 87000 people
20 km 15000 people
10 km <1000 people
5 km <1000 people
2 km no people

Affected Provinces

Region Province Country Population
Hokkaido Japan 5.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Nishicha Hokkaido Japan Village - 16 km
Panke Hokkaido Japan Village - 17 km
Samani Hokkaido Japan Village - 18 km
Sapporo Hokkaido Japan Major city 1.9 million people 157 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
Obihiro OBO 149 Civ. Paved Yes 8200 54 km
Tokachi 84 Civ. Paved Yes 4900 69 km

Ports

Name LOCODE Country Distance
Samani JPSAM Japan 19 km
Tokachi JPTOK Japan 30 km

Dams

Reservoir Dam Name River Year Distance
Samaniko Samani Samanigawa 1974 12 km

More information

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