M 6.8 in Japan on 01 May 2021 01:27 UTC

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: 6.8M
Depth: 47.3 Km
Lat/Lon: 38.2296 , 141.6646
Event Date: 01 May 2021 01:27 UTC
01 May 2021 10:27 Local
Exposed Population: 1350000 people in MMI VI
2450000 people within 100km
Source: NEIC us7000dz5t
Inserted at: 01 May 2021 01:49 UTC
INFORM Coping capacity of the alert score: 1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
NEIC 0 0 0
us7000dz5t Scaled population (vector) 0 Max wave alert 0.08m  
  C1 shakemap -0.59 Max wave realtime 0.08m  
  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
1372992 0.1 01 May 2021 01:27 6.6M, 56km N/A 2.2 million (in 100km) 0m (at 00:00) 00:08 PTWC
1372994 0.1 01 May 2021 01:27 6.6M, 56km N/A 2.2 million (in 100km) 0m (at 00:00) 00:14 NTWC
1372999 0 01 May 2021 01:27 6.8M, 47.3km 6.42 less than 100 (in MMI>=VII) 0.1m (at 00:52) 00:21 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 Oshika, Futawatashi, Niiyama, Ayukawahama, Aji, Kukunari, Ikenohama, Tomari, Oharahama, Kobuchi, and Hatanosawa.

Radius Population
100 km 2.4 million people
75 km 1.7 million people
50 km 130000 people
20 km 5100 people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Tohoku Japan 9.9 million people

Affected populated places

Name Region Province Country City class Population Distance
Oshika Miyagi Japan Village - 15 km
Futawatashi Miyagi Japan Village - 15 km
Niiyama Miyagi Japan Village - 16 km
Ayukawahama Miyagi Japan Village - 16 km
Aji Miyagi Japan Village - 17 km
Kukunari Miyagi Japan Village - 18 km
Ikenohama Miyagi Japan Village - 18 km
Tomari Miyagi Japan Village - 19 km
Oharahama Miyagi Japan Village - 19 km
Kobuchi Miyagi Japan Village - 20 km
Yoriiso Miyagi Japan Village - 22 km
Yagawa Miyagi Japan Village - 22 km
Koamikura Miyagi Japan Village - 23 km
Samenoura Miyagi Japan Village - 23 km
Nitoda Miyagi Japan Village - 23 km
Odomari Miyagi Japan Village - 23 km
Fukkiura Miyagi Japan Village - 24 km
Takenohama Miyagi Japan Village - 25 km
Kitsunezaki Miyagi Japan Village - 25 km
Terama Miyagi Japan Village - 26 km
Izushima Miyagi Japan Village - 28 km
Kotake Miyagi Japan Village - 30 km
Onagawahama Miyagi Japan Village - 30 km
Ommaehama Miyagi Japan Village - 31 km
Kuwahama Miyagi Japan Village - 32 km
Kumazawa Miyagi Japan Village - 33 km
Tatsuhama Miyagi Japan Village - 33 km
Watanoha Miyagi Japan Village - 34 km
Osu Miyagi Japan Village - 34 km
Ohama Miyagi Japan Village - 35 km
Ogatsu Miyagi Japan Village - 35 km
Funagoshi Miyagi Japan Village - 36 km
Inai Miyagi Japan Village - 38 km
Mizunuma Miyagi Japan Village - 38 km
Ishinomaki Miyagi Japan City 110000 people 39 km
Nagatsura Miyagi Japan Village - 40 km
Moto-Funaba Miyagi Japan Village - 40 km
Higashi-Fukuda Miyagi Japan Village - 41 km
Tsukihama Miyagi Japan Village - 42 km
Kamata Miyagi Japan Village - 43 km
Iinogawa Miyagi Japan Village - 44 km
Kanomata Miyagi Japan Village - 44 km
Ozashi Miyagi Japan Village - 44 km
Onagawa Miyagi Japan Village - 44 km
Aikawa Miyagi Japan Village - 44 km
Yamane Miyagi Japan Village - 45 km
Kodaki Miyagi Japan Village - 45 km
Saragai Miyagi Japan Village - 45 km
Tsukihama Miyagi Japan Village - 46 km
Iwasaki Miyagi Japan Village - 46 km
Terahama Miyagi Japan Village - 46 km
Hamaichi Miyagi Japan Village - 46 km
Naka-Komatsu Miyagi Japan Village - 47 km
Sunaoshi Miyagi Japan Village - 47 km
Shinden Miyagi Japan Village - 47 km
Hirobuchi Miyagi Japan Village - 48 km
Nojiri Miyagi Japan Village - 48 km
Takagi Miyagi Japan Village - 48 km
Ota Miyagi Japan Village - 49 km
Ono Miyagi Japan Village - 49 km
Oritate Miyagi Japan Village - 49 km
Wabuchi Miyagi Japan Village - 51 km
Aramachi Miyagi Japan Village - 51 km
Maeyachi Miyagi Japan Village - 52 km
Aratohama Miyagi Japan Village - 52 km
Kitazawa Miyagi Japan Village - 52 km
Uenodai Miyagi Japan Village - 52 km
Yanaizu Miyagi Japan Village - 52 km
Shinzan Miyagi Japan Village - 52 km
Shizugawa Miyagi Japan Village - 53 km
Osawa Miyagi Japan Village - 53 km
Shobudahama Miyagi Japan Village - 53 km
Tomarihama Miyagi Japan Village - 53 km
Kamimachi Miyagi Japan Village - 53 km
Shirotori Miyagi Japan Village - 53 km
Honchi Miyagi Japan Village - 54 km
Nigo Miyagi Japan Village - 54 km
Takaki Miyagi Japan Village - 54 km
Taketani Miyagi Japan Village - 54 km
Kimazuka Miyagi Japan Village - 55 km
Shinkawa Miyagi Japan Village - 55 km
Yoshizumi Miyagi Japan Village - 55 km
Isatomae Miyagi Japan Village - 55 km
Natari Miyagi Japan Village - 56 km
Hirawata Miyagi Japan Village - 56 km
Oyanagi Miyagi Japan Village - 56 km
Kagamiishi Miyagi Japan Village - 56 km
Kami-Hazawa Miyagi Japan Village - 57 km
Wakuya Miyagi Japan City 18000 people 57 km
Minato Miyagi Japan Village - 57 km
Shiogama Miyagi Japan City 59000 people 57 km
Gamo Miyagi Japan Village - 58 km
Schiogama Miyagi Japan Village - 58 km
Umenomiya-Jutaku Miyagi Japan Village - 58 km
Yamanomachi Miyagi Japan Village - 58 km
Fukugafukuro Miyagi Japan Village - 59 km
Haraigawa Miyagi Japan Village - 59 km
Morinokoshi Miyagi Japan Village - 59 km
Wada-Shinden Miyagi Japan Village - 59 km
Shinzeki Miyagi 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
Matsushima 2 Civ. Paved Yes 8800 44 km
Kasuminome 5 0 64 km
Sendai SDJ 5 Civ. Paved Yes 9800 66 km
Ojojibara 70 0 78 km

Ports

Name LOCODE Country Distance
Onagawa JPONG Japan 30 km
Ishinomaki JPISM Japan 36 km
Shiogama JPSGM Japan 56 km
Kesennuma Ko Japan 71 km
Soma JPSMA Japan 76 km
Ofunato JPOFT Japan 92 km

Dams

Reservoir Dam Name River Year Distance
Naganuma Naganuma Hazamagawa 2005 69 km
Tarumizuko Tarumizu Masudagawa 1976 72 km
Kejonuma Kejonuma Tajirigawa 1995 76 km
Nanatsumoriko Minamikawa Minamikawa 1987 77 km
Nanakita Nanakita Nanakitagawa 1984 83 km
Okurako Okura Okuragawa 1961 85 km
Kamafusako Kamafusa Goishigawa 1970 85 km
Hanayamako Hanayama Hazamagawa 2004 93 km
Tamanotameike Tamano Udagawa 1945 95 km
Takanokura Takanokura Mizunashigawa 1975 95 km
Yokokawa Yokokawa Otagawa 1983 97 km
Meigenko Urushizawa Narusegawa 1980 97 km
Kurikoma Kurikoma Sanhazamagawa 1961 100 km

Nuclear plants

Name Country Reactors Distance
ONAGAWA JAPAN 3 24 km

More information

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