M 4.7 in Japan on 20 Dec 2012 10:54 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: 4.7M
Depth: Km
Lat/Lon: 42.1791 , 142.622
Event Date: 20 Dec 2012 10:54 UTC
20 Dec 2012 19:54 Local
Exposed Population:
460000 people within 100km
Source: NEIC usc000edcf
Inserted at: 20 Dec 2012 11:19 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000edcf 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
121533 0.5 20 Dec 2012 10:54 4.7M, 9.8km N/A 460 thousand (in 100km) 00:25 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 Ogifushi, Kerimabu, Utabue, Urakawa, Nishicha, Higashi-shizunai, Samani, Kami mitsuishi, Shizunai, Ichibu, and Naka-satsunai.

Radius Population
100 km 470000 people
75 km 100000 people
50 km 56000 people
20 km 20000 people
10 km 4700 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
Ogifushi Hokkaido Japan Village - 5 km
Kerimabu Hokkaido Japan Village - 7 km
Utabue Hokkaido Japan Village - 12 km
Urakawa Hokkaido Japan Village - 13 km
Nishicha Hokkaido Japan Village - 19 km
Higashi-shizunai Hokkaido Japan Village - 20 km
Samani Hokkaido Japan Village - 24 km
Kami mitsuishi Hokkaido Japan Village - 24 km
Shizunai Hokkaido Japan Village 22000 people 27 km
Ichibu Hokkaido Japan Village - 28 km
Sariwarabe Hokkaido Japan Village - 31 km
Niikappu Hokkaido Japan Village - 33 km
Kurambetsu Hokkaido Japan Village - 36 km
Panke Hokkaido Japan Village - 39 km
Atsugacho Hokkaido Japan Village - 41 km
Showa Hokkaido Japan Village - 47 km
Horoizumi Hokkaido Japan Village - 48 km
Kami-toyoni Hokkaido Japan Village - 52 km
Mombetsu Hokkaido Japan Village - 56 km
Chipira Hokkaido Japan Village - 57 km
Onitoppu Hokkaido Japan Village - 58 km
Erimo Hokkaido Japan Village - 58 km
Hiroo Hokkaido Japan Village - 58 km
Toyoni Hokkaido Japan Village - 59 km
Sarufuto Hokkaido Japan Village - 61 km
Oda Hokkaido Japan Village - 61 km
Kawamukai Hokkaido Japan Village - 62 km
Kami-notsuka Hokkaido Japan Village - 62 km
Moto-sarabetsu Hokkaido Japan Village - 64 km
Taiki Hokkaido Japan Village - 64 km
Biratori Hokkaido Japan Village - 65 km
Hobiboe Hokkaido Japan Village - 65 km
Furenai Hokkaido Japan Village - 66 km
Ohira Hokkaido Japan Village - 68 km
Yachiyo Hokkaido Japan Village - 68 km
Naka-satsunai Hokkaido Japan Village - 70 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 79 km
Tokachi 84 Civ. Paved Yes 4900 91 km
Sado Shima SDS unknown 0 91 km

Ports

Name LOCODE Country Distance
Samani JPSAM Japan 25 km
Tokachi JPTOK Japan 58 km
Tomakomai JPTMK Japan 97 km

Dams

Reservoir Dam Name River Year Distance
Mitsuishi Mitsuishi Mitsuishigawa 1991 23 km
Shizunaichoseichi Shizunai Shizunaigawa 1966 27 km
Samaniko Samani Samanigawa 1974 28 km
Takamiko Takami Shizunaigawa 1983 31 km
Higashinosawachoseichi Higashinosawa Koikakushushibicharigawa 1987 36 km
Horomanko Horomangawadaisan Horomangawa 1954 38 km
Shimonikappu Shimonikappu Nikappugawa 1969 44 km
Niikappu Niikappu Niikappugawa 1974 48 km
Poroshiriko Okunikappu Nikappugawa 1963 55 km
Nibutaniko Nibutani Sarugawa n/a 64 km
Iwachishi Iwachishi Sarugawa 1958 71 km
Azuma Azuma Azumagawa 1969 84 km
Hobetsu Hobetsu Hobetsugawa 1984 87 km
Kawabata Kawabata Yubarigawa 1962 100 km

More information

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