M 4.7 in Japan on 25 Dec 2015 16:42 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: 42.45 Km
Lat/Lon: 39.7652 , 141.3475
Event Date: 25 Dec 2015 16:42 UTC
26 Dec 2015 01:42 Local
Exposed Population:
2281786 people within 100km
Source: NEIC
Inserted at: 25 Dec 2015 17:39 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.1 0.1
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
1113097 0.1 25 Dec 2015 16:42 4.7M, 42.45km N/A 2.3 million (in 100km) 00:56 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 Tohoku (population 9,984,608) . The nearest places are Morioka, Sodeyama, and Komagasawa.

Radius Population
100 km 2.3 million people
75 km 1.2 million people
50 km 640000 people
20 km 110000 people
10 km 1700 people
5 km <1000 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Tohoku Japan 10 million people

Affected populated places

Name Region Province Country City class Population Distance
Sodeyama Iwate Japan Village - 6 km
Komagasawa Iwate Japan Village - 8 km
Morioka Iwate Japan Major city 290000 people 20 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
Ippongibara 304 26 km
Hanamaki HNA 91 Civ. Paved Yes 6500 42 km

Ports

Name LOCODE Country Distance
Miyako JPMYK Japan 54 km
Fudai Japan 56 km

Dams

Reservoir Dam Name River Year Distance
Gandoko Gando Tandogawa 1960 8 km
Sotoyama Sotoyama Sotoyamagawa 1943 8 km
Tsunatori Tsunatori Nagatsugawa 1982 15 km
Nanbukatafujiko Shijushida Kitakamigawa 1968 19 km

More information

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