M 4.5 in Japan on 31 Jul 2020 17:55 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: 150.77 Km
Lat/Lon: 41.2167 , 140.1164
Event Date: 31 Jul 2020 17:55 UTC
01 Aug 2020 02:55 Local
Exposed Population:
1250000 people within 100km
Source: NEIC us6000b7j9
Inserted at: 31 Jul 2020 18:55 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
us6000b7j9 Scaled population (vector) 5.74  
  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
1324253 0 31 Jul 2020 17:55 4.5M, 150.77km N/A 1.3 million (in 100km) 01:00 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 Kodomari, Tappi, Araya, Matsumae, Mimmaya, Jusan-ko, Kotanishi, Shizuura, Fukushima, Imabetsu, and Sakaki.

Radius Population
100 km 1.3 million people
75 km 660000 people
50 km 85000 people
20 km 3300 people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Tohoku Japan 10 million people
Hokkaido Japan 5.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Kodomari Aomori Japan Village - 19 km
Tappi Aomori Japan Village - 20 km
Araya Hokkaido Japan Village - 22 km
Matsumae Hokkaido Japan Village - 23 km
Mimmaya Aomori Japan Village - 26 km
Jusan-ko Aomori Japan Village - 27 km
Kotanishi Aomori Japan Village - 28 km
Shizuura Hokkaido Japan Village - 31 km
Fukushima Hokkaido Japan Village - 31 km
Imabetsu Aomori Japan Village - 32 km
Imaizumi Aomori Japan Village - 33 km
Tomiyachi Aomori Japan Village - 36 km
Shariki Aomori Japan Village - 36 km
Oppetsu Aomori Japan Village - 37 km
Ushigata Aomori Japan Village - 38 km
Shimo Shariki Aomori Japan Village - 38 km
Tamogi Aomori Japan Village - 38 km
Tsunashirazu Aomori Japan Village - 38 km
Shimo-Ushigata Aomori Japan Village - 39 km
Hirataki Aomori Japan Village - 39 km
Nakasato Aomori Japan Village - 39 km
Dogizaka Aomori Japan Village - 40 km
Odai Aomori Japan Village - 41 km
Ozawanai Aomori Japan Village - 41 km
Era Hokkaido Japan Village - 41 km
Tateoka Aomori Japan Village - 42 km
Shigeta Aomori Japan Village - 42 km
Kawakura Aomori Japan Village - 42 km
Komotsuchi Aomori Japan Village - 43 km
Fukutomi Aomori Japan Village - 43 km
Saiga Aomori Japan Village - 44 km
Tairadate Aomori Japan Village - 44 km
Numazaki Aomori Japan Village - 45 km
Ishidate Aomori Japan Village - 45 km
Maruyama Aomori Japan Village - 45 km
Funaoka Aomori Japan Village - 45 km
Kanagi Aomori Japan Village - 46 km
Shimo-Mogawa Aomori Japan Village - 46 km
Hayashi Aomori Japan Village - 46 km
Kanedate Aomori Japan Village - 47 km
Kiraichi Aomori Japan Village - 48 km
Kanita Aomori Japan Village - 48 km
Koshimizu Aomori Japan Village - 48 km
Shiriuchi Hokkaido Japan Village - 48 km
Ishizaki Hokkaido Japan Village - 49 km
Yoshimi Aomori Japan Village - 49 km
Nakakashiwagi Aomori Japan Village - 49 km
Ajigasawa Aomori Japan City - 49 km
Kawajiri Aomori Japan Village - 49 km
Hirooka Aomori Japan Village - 49 km
Nakano-Shinden Aomori Japan Village - 50 km
Maido Aomori Japan Village - 50 km
Shibata Aomori Japan Village - 50 km
Odate Aomori Japan Village - 50 km
Fukuhara Aomori Japan Village - 50 km
Kizukuri Aomori Japan Village 19000 people 51 km
Tamamizu Aomori Japan Village - 52 km
Gozawa Aomori Japan Village - 52 km
Naka Aomori Japan Village - 52 km
Hiderita Aomori Japan Village - 52 km
Seki Aomori Japan Village - 53 km
Amidagawa Aomori Japan Village - 53 km
Akaishimachi Aomori Japan Village - 53 km
Iizume Aomori Japan Village - 53 km
Tateishi Aomori Japan Village - 53 km
Goshogahara Aomori Japan Village - 53 km
Shimo-hareyama Aomori Japan Village - 53 km
Nagashima Aomori Japan Village - 54 km
Tokoshinai Aomori Japan Village - 54 km
Myodozaki Aomori Japan Village - 54 km
Kuwanokida Aomori Japan Village - 54 km
Hama-Yokosawa Aomori Japan Village - 54 km
Nakazawa Aomori Japan Village - 55 km
Takibuchi Aomori Japan Village - 55 km
Tatemura Aomori Japan Village - 55 km
Odoji Aomori Japan Village - 55 km
Omaki Aomori Japan Village - 55 km
Itayabori Hokkaido Japan Village - 56 km
Onohata Aomori Japan Village - 56 km
Kobashi Aomori Japan Village - 56 km
Uchimambe Aomori Japan Village - 57 km
Kikonai Hokkaido Japan Village - 57 km
Matsunoki Aomori Japan Village - 57 km
Tanesato Aomori Japan Village - 57 km
Kizutsu Aomori Japan Village - 57 km
Isurugi Aomori Japan Village - 57 km
Nagadai Aomori Japan Village - 57 km
Tozurazawa Aomori Japan Village - 58 km
Tsuruda Aomori Japan Village - 58 km
Hosogatai Aomori Japan Village - 58 km
Ogiishi Hokkaido Japan Village - 58 km
Nozato Aomori Japan Village - 58 km
Shimizu Aomori Japan Village - 58 km
Ushitaki Aomori Japan Village - 59 km
Hitotsumori Aomori Japan Village - 59 km
Ipponsugi Aomori Japan Village - 59 km
Miwa Aomori Japan Village - 59 km
Todoroki Aomori Japan Village - 59 km
Shobukawa Aomori Japan Village - 59 km
Okunai Aomori Japan Village - 59 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
Aomori AOJ 199 Civ. Paved Yes 8200 72 km
Hakodate HKD 34 Civ. Paved Yes 9800 85 km

Ports

Name LOCODE Country Distance
Fukushima Japan 30 km
Aomori JPAOJ Japan 69 km
Esasi Ko Japan 72 km
Hakodate JPHKD Japan 80 km
Ohata Japan 84 km
Ominato JPOMT Japan 89 km

Dams

Reservoir Dam Name River Year Distance
Odagawa Odagawa Odagawa 1975 51 km
Shinkodoroku Shinkodoroku Yamadagawa 1967 53 km
Fudoko Iizume Iizumegawa 1972 54 km
Namioka Namioka Kareizawagawa 1982 72 km
Miyamako Meya Iwakigawa 1959 76 km
Shimoyuheiseiko Shimoyu Tsutsumigawa 1988 81 km
Tanosawatameike Tanosawatameike Shimizugawa 1942 81 km
Kamiiso Kamiiso Hekirichigawa 1990 83 km
Nijinoko Asaseishigawa Asaseishigawa 1988 84 km
Fujinoko Oana Nishonaigawa 1933 86 km
Hayaseno Hayaseno Nijigaigawa 1984 91 km
Chokeiko Hayakuchi Hayakuchigawa 1976 92 km
Tenma Tenma Tsubokawa 1968 93 km
Yabetsu Yabetsu Shiodomari 1975 96 km
Subariko Subari Kasugegawa 1970 98 km
Ainumako Ainumanai Ainumanaigawa 1930 98 km
Komagatake Komagatake Shimazakigawa 1985 99 km

More information

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