M 4.7 in Japan from 09 Jan 2011 12:42 UTC to 12:42

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: 4.7M
Depth: Km
Lat/Lon: 42.3 , 144.6
Event Date: 09 Jan 2011 12:42 UTC
09 Jan 2011 22:42 Local
Exposed Population:
260000 people within 100km
Source: JMA
Inserted at: 09 Jan 2011 12:53 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
JMA 0.5 0.5
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
103130 0.5 09 Jan 2011 12:42 4.7M, 50km N/A 260 thousand (in 100km) 00:08 JMA
103131 0.5 09 Jan 2011 12:42 4.7M, 50km N/A 260 thousand (in 100km) 00:10 JMA
103132 0.5 09 Jan 2011 12:42 4.7M, 50km N/A 260 thousand (in 100km) 00:11 JMA
103133 0.5 09 Jan 2011 12:42 4.7M, 50km N/A 260 thousand (in 100km) 00:14 JMA
103134 0.5 09 Jan 2011 12:42 5M, 34.8km N/A 260 thousand (in 100km) 00:21 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) .

Radius Population
100 km 230000 people
75 km 11000 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
Hokkaido Japan 5.8 million people
Sakhalinskaya oblast' Russian Federation 730000 people
Tohoku Japan 10 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
Kushiro KUH 95 Civ. Paved Yes 7500 89 km

Ports

Name LOCODE Country Distance
Kushiro JPKUH Japan 77 km
Akkeshi JPAKE Japan 84 km
Otsu JPOTU Japan 89 km

More information

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