M 5.1 in Japan from 20 Sep 2007 22:54 UTC to 22:54

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: 5.1M
Depth: 23 Km
Lat/Lon: 35.22 , 140.88
Event Date: 20 Sep 2007 22:54 UTC
21 Sep 2007 07:54 Local
Exposed Population:
3960000 people within 100km
Source: EMSC
Inserted at: 21 Sep 2007 08:58 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
EMSC 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
30632 0.5 20 Sep 2007 22:54 5M, 10km N/A 770 thousand (in 100km) 02:13 JMA
30633 0.5 20 Sep 2007 22:54 5M, 25.9km N/A 4.8 million (in 100km) 02:38 NEIC
30637 0.5 20 Sep 2007 22:54 5.1M, 23km N/A 4 million (in 100km) 10:04 EMSC
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) .

Radius Population
100 km 1.3 million people
75 km 190000 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Country Region Province Population
Japan Kanto 38.5 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
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 95 km

Ports

Name LOCODE Country Distance
Choshi JPCHO Japan 67 km
Katsuura Ko Japan 82 km
Kashima JPKSM Japan 89 km

More information

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