M 4.5 in Japan on 19 Oct 2021 15:18 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: 4.5M
Depth: 50.38 Km
Lat/Lon: 41.6494 , 142.7759
Event Date: 19 Oct 2021 15:18 UTC
20 Oct 2021 01:18 Local
Exposed Population:
60 thousand in 100km
Source: NEIC us6000fvvz
Inserted at: 19 Oct 2021 16:04 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
us6000fvvz Scaled population (vector) 4.29  
  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
1403275 0 19 Oct 2021 15:18 4.5M, 50.38km N/A 60 thousand (in 100km) 00:45 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 Erimo, Horoizumi, Kurambetsu, Samani, Urakawa, Nishicha, Chipira, Ogifushi, Panke, Kerimabu, and Utabue.

Radius Population
100 km 65000 people
75 km 30000 people
50 km <1000 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 10 million people
Sakhalinskaya oblast' Russian Federation 730000 people

Affected populated places

Name Region Province Country City class Population Distance
Erimo Hokkaido Japan Village - 50 km
Horoizumi Hokkaido Japan Village - 51 km
Kurambetsu Hokkaido Japan Village - 52 km
Samani Hokkaido Japan Village - 55 km
Urakawa Hokkaido Japan Village - 57 km
Nishicha Hokkaido Japan Village - 58 km
Chipira Hokkaido Japan Village - 59 km
Ogifushi Hokkaido Japan Village - 61 km
Panke Hokkaido Japan Village - 65 km
Kerimabu Hokkaido Japan Village - 67 km
Utabue Hokkaido Japan Village - 69 km

see full list

Critical infrastructure

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

Ports

Name LOCODE Country Distance
Samani JPSAM Japan 54 km
Tokachi JPTOK Japan 80 km

Dams

Reservoir Dam Name River Year Distance
Horomanko Horomangawadaisan Horomangawa 1954 59 km
Samaniko Samani Samanigawa 1974 61 km
Mitsuishi Mitsuishi Mitsuishigawa 1991 82 km
Shizunaichoseichi Shizunai Shizunaigawa 1966 87 km
Takamiko Takami Shizunaigawa 1983 91 km
Higashinosawachoseichi Higashinosawa Koikakushushibicharigawa 1987 92 km

More information

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