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.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


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 ,of Tohoku (population 9,984,608) . The alertlevel for this event is GREEN

Intensity Population
1.3 million people
1 million people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1372999 38.23/141.665 6.8 47.3 5.98 01 May 2021 01:52 00:24 (new episode)
2 0 1372999 38.23/141.665 6.8 47.3 5.98 01 May 2021 02:27 01:00 (upd of #1)
3 0 1372999 38.23/141.665 6.8 47.3 6.195 01 May 2021 03:33 02:06 (upd of #2)
4 0 1372999 38.23/141.665 6.8 47.3 6.415 02 May 2021 01:31 1d 00:04 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Tohoku Japan 1.3 million people
Tohoku Japan 1 million people
Tohoku Japan 3.4 million people
Kanto Japan 3300 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Oshika Miyagi Japan Village - 15 km
Niiyama Miyagi Japan Village - 16 km
Aji Miyagi Japan Village - 17 km
Oharahama Miyagi Japan Village - 19 km
Yagawa Miyagi Japan Village - 22 km
Nitoda Miyagi Japan Village - 23 km
Onagawahama Miyagi Japan Village - 30 km
Watanoha Miyagi Japan Village - 34 km
Ohama Miyagi Japan Village - 35 km
Ogatsu Miyagi Japan Village - 35 km
Ishinomaki Miyagi Japan City 110000 people 39 km
Nagatsura Miyagi Japan Village - 40 km
Tsukihama Miyagi Japan Village - 42 km
Kamata Miyagi Japan Village - 43 km
Iinogawa Miyagi Japan Village - 44 km
Terahama Miyagi Japan Village - 46 km
Shinden Miyagi Japan Village - 47 km
Takagi Miyagi Japan Village - 48 km
Wabuchi Miyagi Japan Village - 51 km
Yanaizu Miyagi Japan Village - 52 km
Kamimachi Miyagi Japan Village - 53 km
Takaki Miyagi Japan Village - 54 km
Isatomae Miyagi Japan Village - 55 km
Hirawata Miyagi Japan Village - 56 km
Oyanagi Miyagi Japan Village - 56 km
Wakuya Miyagi Japan City 18000 people 57 km
Shiogama Miyagi Japan City 59000 people 57 km
Schiogama Miyagi Japan Village - 58 km
Shinzeki Miyagi Japan Village - 59 km
Nishino Miyagi Japan Village - 59 km
Ido Miyagi Japan Village - 61 km
Matsuyama Miyagi Japan Village - 62 km
Shimomachi Miyagi Japan Village - 64 km
Sanuma Miyagi Japan City - 65 km
Tajiri Miyagi Japan Village - 67 km
Sendai Miyagi Japan Major city 1 million people 68 km
Iinosaka Miyagi Japan Village - 70 km
Oritate Miyagi Japan Village - 49 km
Shizugawa Miyagi Japan Village - 53 km
Minato Miyagi Japan Village - 57 km
Maeya Miyagi Japan Village - 62 km
Motoyoshi Miyagi Japan Village - 63 km
Oya Miyagi Japan Village - 65 km
Oenokawara Miyagi Japan Village - 66 km
Tsuya Miyagi Japan Village - 67 km
Matsuzaki Miyagi Japan Village - 68 km
Arahama Miyagi Japan Village - 69 km
Kesennuma Miyagi Japan Village 58000 people 70 km
Hanagama Miyagi Japan Village - 72 km
Furukawa Miyagi Japan City 75000 people 72 km
Semine Miyagi Japan Village - 72 km
Yoshioka Miyagi Japan Village - 72 km
Wakayanagi Miyagi Japan Village - 72 km
Araya Miyagi Japan Village - 73 km
Takakiyomizu Miyagi Japan Village - 74 km
Watari Miyagi Japan Village 35000 people 74 km
Fujisawa Iwate Japan Village - 75 km
Sakamoto Miyagi Japan Village - 75 km
Yamashita Miyagi Japan Village - 75 km
Futsukamachi Iwate Japan Village - 75 km
Tadagoe Miyagi Japan Village - 77 km
Kami-tsuyakawa Iwate Japan Village - 77 km
Naka-niida Miyagi Japan Village - 77 km
Hosokura Miyagi Japan Village - 78 km
Nenoshiroishi Miyagi Japan Village - 78 km
Tsukidate Miyagi Japan Village - 79 km
Wakuchi Iwate Japan Village - 79 km
Kakuda Miyagi Japan Village 33000 people 80 km
Shimo-orikabe Iwate Japan Village - 80 km
Nakumura Fukushima Japan Village - 80 km
Tomari Iwate Japan Village - 80 km
Semmaya Iwate Japan Village - 81 km
Sawabe Miyagi Japan Village - 81 km
Usuginu Iwate Japan Village - 81 km
Aka-nitta Miyagi Japan Village - 82 km
Masaka Miyagi Japan Village - 83 km
Imaizumi Iwate Japan Village - 83 km
Murata Miyagi Japan Village - 83 km
Iwaeyama Miyagi Japan Village - 84 km
Arikabe Miyagi Japan Village - 84 km
Surisawa Iwate Japan Village - 85 km
Shirasawa Miyagi Japan Village - 85 km
Kashima Fukushima Japan Village - 85 km
Ogawara Miyagi Japan Village 22000 people 86 km
Baba Miyagi Japan Village - 86 km
Higashi-onoda Miyagi Japan Village - 86 km
Marumori Miyagi Japan Village 16000 people 87 km
Iwagasaki Miyagi Japan Village - 88 km
Miyasaki Miyagi Japan Village - 88 km
Kawasaki Miyagi Japan Village - 89 km
Nagano Miyagi Japan Village - 89 km
Ohara Iwate Japan Village - 89 km
Shimo-miya Miyagi Japan Village - 90 km
Ichinoseki Iwate Japan City 62000 people 90 km
Kawaguchi Miyagi Japan Village - 90 km
Hosokura Miyagi Japan Village - 91 km
Shiroishi Miyagi Japan Village 39000 people 91 km
Nagasaka Iwate Japan Village - 93 km
Kawatabi Miyagi Japan Village - 95 km
Haramachi Fukushima Japan Village 46000 people 95 km
Odaka Fukushima Japan Village - 95 km
Itsukushi Iwate Japan Village - 95 km
Sarusawa Iwate Japan Village - 95 km
Ryuoka Miyagi Japan Village - 97 km
Kadozawa Miyagi Japan Village - 97 km
Takihara Iwate Japan Village - 99 km
Tokatta Miyagi Japan Village - 99 km
Naruko Miyagi Japan Village - 100 km
Namie Fukushima Japan Village 21000 people 101 km
Kitamata Iwate Japan Village - 103 km
Rikuzen-Takata Iwate Japan Village - 87 km
Ryori Iwate Japan Village - 91 km
Ofunato Iwate Japan Village 36000 people 92 km
Yokamachi Iwate Japan Village - 96 km
Higashi-tamano Fukushima Japan Village - 99 km
Okkirai Iwate Japan Village - 99 km
Setamai Iwate Japan Village - 100 km
Yanagawa Fukushima Japan Village 20000 people 102 km
Kaita Fukushima Japan Village - 102 km
Kawaguchi Iwate Japan Village - 103 km
Nekkomachi Iwate Japan Village - 104 km
Shinden Yamagata Japan Village - 106 km
Maesawa Iwate Japan Village - 107 km
Nakayama Yamagata Japan Village - 107 km
Seki Miyagi Japan Village - 108 km
Hobara Fukushima Japan Village 24000 people 108 km
Yamadera Yamagata Japan Village - 109 km
Tamoyama Iwate Japan Village - 109 km
Ide Iwate Japan Village - 110 km
Mizusawa Iwate Japan City 60000 people 110 km
Hongo Iwate Japan Village - 110 km
Tomisawa Yamagata Japan Village - 111 km
Takaru Yamagata Japan Village - 111 km
Hara Miyagi Japan Village - 112 km
Ganyu Miyagi Japan Village - 112 km
Kawamata Fukushima Japan Village 16000 people 112 km
Tsurumakida Yamagata Japan Village - 112 km
Kutsukake Iwate Japan Village - 113 km
Tendo Yamagata Japan Village 59000 people 114 km
Shirahama Iwate Japan Village - 114 km
Higashine Yamagata Japan Village 45000 people 114 km
Esashi Iwate Japan Village 32000 people 114 km
Hitokabe Iwate Japan Village - 114 km
Tomioka Fukushima Japan Village - 115 km
Koori Fukushima Japan Village - 115 km
Tateoka Yamagata Japan Village - 115 km
Sekibukuro Iwate Japan Village - 116 km
Mukaimachi Yamagata Japan Village - 116 km
Narage Yamagata Japan Village - 116 km
Yamagata Yamagata Japan Major city 250000 people 116 km
Ohashi Iwate Japan Village - 117 km
Fukusaima Fukushima Japan City - 117 km
Otomomachi Iwate Japan Village - 117 km
Kamaishi Iwate Japan City 42000 people 117 km
Furumichi Fukushima Japan Village - 118 km
Harimichi Fukushima Japan Village - 119 km
Ohori Yamagata Japan Village - 119 km
Ashizawa Yamagata Japan Village - 119 km
Obanazawa Yamagata Japan Village 20000 people 119 km
Murayama Yamagata Japan Village 27000 people 119 km
Yachi Yamagata Japan Village - 120 km
Yunohara Miyagi Japan Village - 120 km
Akabane Iwate Japan Village - 120 km
Okubo Iwate Japan Village - 122 km
Sasanagane Iwate Japan Village - 122 km
Kaminoyama Yamagata Japan Village 35000 people 122 km
Oyasu Akita Japan Village - 122 km
Sagae Yamagata Japan Village 42000 people 122 km
Yamabe Yamagata Japan Village - 122 km
Ryoishi Iwate Japan Village - 122 km
Tono Iwate Japan Village 26000 people 123 km
Matsukawa Fukushima Japan Village - 124 km
Hirose Iwate Japan Village - 124 km
Sakashiuchi Fukushima Japan Village - 124 km
Nagisawa Yamagata Japan Village - 124 km
Niijuku Yamagata Japan Village - 125 km
Tokiwa Fukushima Japan Village - 126 km
Nonaka Iwate Japan Village - 126 km
Kohama Fukushima Japan Village - 127 km
Shiraiwa Yamagata Japan Village - 127 km
Funagata Yamagata Japan Village - 127 km
Kawatoi Yamagata Japan Village - 128 km
Anto Iwate Japan Village - 128 km
Kitakami Iwate Japan Village 92000 people 129 km
Nihommatsu Fukushima Japan Village 36000 people 129 km
Hagino Yamagata Japan Village - 129 km
Funahiki Fukushima Japan Village - 130 km
Kami-ogoe Fukushima Japan Village - 131 km
Shuku Iwate Japan Village - 132 km
Takahata Yamagata Japan Village 26000 people 132 km
Shinjo Yamagata Japan Village 40000 people 133 km
Mijuku Yamagata Japan Village - 133 km
Tsuchisawa Iwate Japan Village - 133 km
Kakenoshita Iwate Japan Village - 133 km
Yotsukura Fukushima Japan Village - 134 km
Kaoyoshi Yamagata Japan Village - 134 km
Aterazawa Yamagata Japan Village - 134 km
Kammata Fukushima Japan Village - 134 km
Nan'yo Yamagata Japan Village - 135 km
Inaniwa Akita Japan Village - 135 km
Washiaimori Iwate Japan Village - 135 km
Kanayama Yamagata Japan Village - 135 km
Miharu Fukushima Japan Village 19000 people 136 km
Uwachi Akita Japan Village - 136 km
Masugata Yamagata Japan Village - 136 km
Hanamaki Iwate Japan City 73000 people 137 km
Arato Yamagata Japan Village - 137 km
Kinzan Yamagata Japan Village - 138 km
Odate Akita Japan Village - 139 km
Nikke Yamagata Japan Village - 140 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Matsushima 2 Civ. Paved Yes 8800
Kasuminome 5 0
Sendai SDJ 5 Civ. Paved Yes 9800
Ojojibara 70 0
Junmachi GAJ 108 Civ. Paved Yes 6500
Hanamaki HNA 91 Civ. Paved Yes 6500
Fukushima FKS 372 Civ. Paved Yes 8200
Hachinohe HHE 46 Mil. Paved Yes 7300

Ports

Intensity Name LOCODE Country
Onagawa JPONG Japan
Ishinomaki JPISM Japan
Shiogama JPSGM Japan
Kesennuma Ko Japan
Soma JPSMA Japan
Ofunato JPOFT Japan
Kamaishi JPKIS Japan
Onahama JPONA Japan
Hachinohe JPHHE Japan

Dams

Intensity Reservoir Dam Name River Year
Tarumizuko Tarumizu Masudagawa 1976
Naganuma Naganuma Hazamagawa 2005
Kejonuma Kejonuma Tajirigawa 1995
Nanatsumoriko Minamikawa Minamikawa 1987
Nanakita Nanakita Nanakitagawa 1984
Okurako Okura Okuragawa 1961
Kamafusako Kamafusa Goishigawa 1970
Hanayamako Hanayama Hazamagawa 2004
Meigenko Urushizawa Narusegawa 1980
Kurikoma Kurikoma Sanhazamagawa 1961
Araoko Naruko Eaigawa 1958
Tamanotameike Tamano Udagawa 1945
Takanokura Takanokura Mizunashigawa 1975
Yokokawa Yokokawa Otagawa 1983
Kawarago Kawarago Shiroishigawa 1968
Ogaki Ogaki Ukedogawa 1985
1991
Sakashita Sakashita Okawaragawa 1973
Ishibuchiko Ishibuchi Isawagawa 1953
Senganishitameike Senganishi Shukunaigawa 1934
Maekawa Maekawa Maekawa 1982
Birusawako Birusawatameike Yashirogawa 1948
Oyasukyoko Minase Minasegawa 1963
Masuzawa Masuzawa Izumitagawa 1963
Kamigo Kamigo Mogamigawa 1962
Ishibane Ishibane Wagagawa 1954
Houjonoumi Mizukubo Kariyasugawa 1971
Bobatako Sengozawa Kitasugawa 1974
Fukadachoseichi Fukadachoseichi Tadanogawa 1982
Fujinumachosuichi Fujimuna Ebanagawa 1948
Yoshigadaira Yoshigadaira Harakawa 1970

Nuclear plants

Intensity Name Country Reactors
ONAGAWA JAPAN 3
FUKUSHIMA-DAIICHI JAPAN 6
FUKUSHIMA-DAINI JAPAN 4

More information

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