M 5 in Japan on 04 May 2021 18:10 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: 5.0M
Depth: 18.25 Km
Lat/Lon: 37.1944 , 141.8417
Event Date: 04 May 2021 18:10 UTC
05 May 2021 03:10 Local
Exposed Population:
390000 people within 100km
Source: NEIC us7000e03w
Inserted at: 06 May 2021 18:19 UTC
INFORM Coping capacity of the alert score
1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000e03w Scaled population (vector) 4.61  
  C1 earthquake 0.73  
  C2 earthquake -0.22  
  Country Vulnerability -0.71  
  INFORM_normalised 0.57  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1373569 0 04 May 2021 18:10 4.9M, 9.42km N/A 420 thousand (in 100km) 00:21 NEIC
1373894 0 04 May 2021 18:10 5M, 18.25km N/A 390 thousand (in 100km) 2d 00:09 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) .

Radius Population
100 km 390000 people
75 km 4200 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
Tohoku Japan 10 million people
Kanto Japan 38.5 million people
Chubu Japan 5.2 million people
Hokkaido Japan 5.8 million people

Critical infrastructure

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

Ports

Name LOCODE Country Distance
Onahama JPONA Japan 88 km

Dams

Reservoir Dam Name River Year Distance
Sakashita Sakashita Okawaragawa 1973 82 km
Ogaki Ogaki Ukedogawa 1985 92 km
Yokokawa Yokokawa Otagawa 1983 94 km
Takanokura Takanokura Mizunashigawa 1975 97 km

Nuclear plants

Name Country Reactors Distance
FUKUSHIMA-DAINI JAPAN 4 73 km
FUKUSHIMA-DAIICHI JAPAN 6 76 km

More information

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