M 5.5 in Japan on 28 Nov 2018 02:23 UTC
EQ parameters

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: 5.5M
Depth: 10 Km
Lat/Lon: 41.3503 , 143.2677
Event Date: 28 Nov 2018 02:23 UTC
28 Nov 2018 12:23 Local
Exposed Population: No people affected in MMI IV
About 15000 people within 100km
Source: NEIC us1000hxal
Inserted at: 28 Nov 2018 02:43 UTC
INFORM Coping capacity of the alert score: 1.5 (Japan)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us1000hxal Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.57  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1238707 0 28 Nov 2018 02:23 5.5M, 10km 3.5 20 thousand 00:20 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 and Erimo.

Radius Population
100 km 15000 people
75 km 2600 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
Tohoku Japan 9.9 million people
Sakhalinskaya oblast' Russian Federation 730000 people

Affected populated places

Name Region Province Country City class Population Distance
Erimo Hokkaido Japan Village - 65 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.


Name LOCODE Country Distance
Samani JPSAM Japan 91 km
Tokachi JPTOK Japan 100 km


Reservoir Dam Name River Year Distance
Horomanko Horomangawadaisan Horomangawa 1954 88 km
Samaniko Samani Samanigawa 1974 96 km

More information

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