M 6.8 in Japan on 01 May 2021 01:27 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: 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
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) 0.3 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 N/A (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 97,393) . The alertlevel for this event is GREEN

Intensity Population
100000 people
2.2 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 97000 people
Tohoku Japan 2.1 million people
Tohoku Japan 7 million people
Kanto Japan 2.3 million 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
Watanoha Miyagi Japan Village - 34 km
Ohama Miyagi Japan Village - 35 km
Ishinomaki Miyagi Japan City 120000 people 39 km
Kamata Miyagi Japan Village - 43 km
Shinden Miyagi Japan Village - 47 km
Wabuchi Miyagi Japan Village - 51 km
Onagawahama Miyagi Japan Village - 30 km
Ogatsu Miyagi Japan Village - 35 km
Nagatsura Miyagi Japan Village - 40 km
Tsukihama Miyagi Japan Village - 42 km
Iinogawa Miyagi Japan Village - 44 km
Terahama Miyagi Japan Village - 46 km
Takagi Miyagi Japan Village - 48 km
Oritate Miyagi Japan Village - 49 km
Yanaizu Miyagi Japan Village - 52 km
Shizugawa Miyagi Japan Village - 53 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
Minato Miyagi Japan Village - 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
Maeya Miyagi Japan Village - 62 km
Matsuyama Miyagi Japan Village - 62 km
Motoyoshi Miyagi Japan Village - 63 km
Shimomachi Miyagi Japan Village - 64 km
Sanuma Miyagi Japan City - 65 km
Oya Miyagi Japan Village - 65 km
Oenokawara Miyagi Japan Village - 66 km
Tsuya Miyagi Japan Village - 67 km
Tajiri Miyagi Japan Village - 67 km
Sendai Miyagi Japan Major city 1 million people 68 km
Matsuzaki Miyagi Japan Village - 68 km
Arahama Miyagi Japan Village - 69 km
Iinosaka Miyagi Japan Village - 70 km
Kesennuma Miyagi Japan Village 59000 people 70 km
Hanagama Miyagi Japan Village - 72 km
Furukawa Miyagi Japan City 76000 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 36000 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
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
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 23000 people 86 km
Baba Miyagi Japan Village - 86 km
Higashi-onoda Miyagi Japan Village - 86 km
Marumori Miyagi Japan Village 17000 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
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
Shimo-orikabe Iwate Japan Village - 80 km
Imaizumi Iwate Japan Village - 83 km
Rikuzen-Takata Iwate Japan Village - 87 km
Ohara Iwate Japan Village - 89 km
Ryori Iwate Japan Village - 91 km
Ofunato Iwate Japan Village 37000 people 92 km
Nagasaka Iwate Japan Village - 93 km
Kawatabi Miyagi Japan Village - 95 km
Haramachi Fukushima Japan Village 47000 people 95 km
Odaka Fukushima Japan Village - 95 km
Itsukushi Iwate Japan Village - 95 km
Sarusawa Iwate Japan Village - 95 km
Yokamachi Iwate Japan Village - 96 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
Higashi-tamano Fukushima Japan Village - 99 km
Okkirai Iwate Japan Village - 99 km
Setamai Iwate Japan Village - 100 km
Naruko Miyagi Japan Village - 100 km
Namie Fukushima Japan Village 22000 people 101 km
Yanagawa Fukushima Japan Village 20000 people 102 km
Kaita Fukushima Japan Village - 102 km
Kitamata Iwate Japan Village - 103 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 61000 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 33000 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 21000 people 119 km
Murayama Yamagata Japan Village 28000 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 36000 people 122 km
Oyasu Akita Japan Village - 122 km
Sagae Yamagata Japan Village 43000 people 122 km
Yamabe Yamagata Japan Village - 122 km
Ryoishi Iwate Japan Village - 122 km
Tono Iwate Japan Village 27000 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
Fudaba Iwate Japan Village - 124 km
Niijuku Yamagata Japan Village - 125 km
Tokiwa Fukushima Japan Village - 126 km
Sawa Iwate Japan Village - 126 km
Nonaka Iwate Japan Village - 126 km
Kaegura Iwate Japan Village - 127 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 93000 people 129 km
Nihommatsu Fukushima Japan Village 36000 people 129 km
Hagino Yamagata Japan Village - 129 km
Otsuchi Iwate Japan Village 16000 people 130 km
Funahiki Fukushima Japan Village - 130 km
Kami-ogoe Fukushima Japan Village - 131 km
Tassobe Iwate Japan Village - 131 km
Shuku Iwate Japan Village - 132 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) 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
Junmachi GAJ 108 Civ. Paved Yes 6500 115 km
Hanamaki HNA 91 Civ. Paved Yes 6500 141 km
Fukushima FKS 372 Civ. Paved Yes 8200 156 km
Shonai SYO 22 Civ. Paved Yes 6500 176 km
Ippongibara 304 0 188 km
Akita AXT 95 Civ. Paved Yes 8200 198 km
Otawara 201 0 209 km
Akita Old 15 0 214 km
Niigata KIJ 7 Civ. Paved Yes 8200 226 km
Odate Noshiro ONJ 89 Civ. Paved Yes 6500 245 km
Utsunomiya QUT 102 Civ. Paved Yes 5500 248 km
Suzumenomiya 82 0 252 km
Hyakuri 32 Mil. Paved Yes 8800 253 km

Ports

Intensity Name LOCODE Country Distance
Ishinomaki JPISM Japan 36 km
Onagawa JPONG Japan 30 km
Shiogama JPSGM Japan 56 km
Kesennuma Ko Japan 71 km
Soma JPSMA Japan 76 km
Ofunato JPOFT Japan 92 km
Kamaishi JPKIS Japan 117 km
Yamada Japan 139 km
Onahama JPONA Japan 158 km
Miyako JPMYK Japan 159 km
Sakata JPSKT Japan 177 km
Fudai Japan 198 km
Hitachi JPHTC Japan 213 km
Niigata-Higashi Japan 215 km
Akita JPAXT Japan 216 km
Niigata JPKIJ Japan 231 km
Aikawa JPAIK Japan 231 km
Funakawa JPFNK Japan 241 km
Oga Japan 249 km

Dams

Intensity 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
Kawarago Kawarago Shiroishigawa 1968 102 km
Araoko Naruko Eaigawa 1958 102 km
Ogaki Ogaki Ukedogawa 1985 104 km
1991 105 km
Sakashita Sakashita Okawaragawa 1973 113 km
Ishibuchiko Ishibuchi Isawagawa 1953 119 km
Senganishitameike Senganishi Shukunaigawa 1934 125 km
Maekawa Maekawa Maekawa 1982 126 km
Taseko Tase Sarugaishigawa 1954 127 km
Birusawako Birusawatameike Yashirogawa 1948 127 km
Oyasukyoko Minase Minasegawa 1963 129 km
Masuzawa Masuzawa Izumitagawa 1963 132 km
Kamigo Kamigo Mogamigawa 1962 134 km
Ishibane Ishibane Wagagawa 1954 135 km
Kinshuko Yuda Wagagawa 1964 137 km
Houjonoumi Mizukubo Kariyasugawa 1971 137 km
Gassanko Sagae Sagaegawa 1990 144 km
Ainono Ainono Yokotegawa 1960 146 km
Toyosawako Toyosawa Toyosawagawa 1961 151 km
Kijiyama Kijiyama Okimatanogawa 1960 153 km
Takasaka Takasaka Sakegawa 1967 155 km
Bobatako Sengozawa Kitasugawa 1974 155 km
Heiannomizuumi Sannokai Takinagawa 2001 155 km
Fukadachoseichi Fukadachoseichi Tadanogawa 1982 156 km
Yakuwa Yakuwa Bonjigawa 1957 160 km
Nicchuhizawako Nicchu Oshikirigawa 1991 163 km
Takashibako Takashiba Samekawa 1961 163 km
Sekishiba Sekishiba Ubadogawa 1958 164 km
Fujinumachosuichi Fujimuna Ebanagawa 1948 166 km
Arasawako Arasawa Akagawa 1955 167 km
Oshuku Oshuku Oshukugawa 1957 168 km
Shitokiko Shitoki Shitokigawa 1983 169 km
Tsunatori Tsunatori Nagatsugawa 1982 169 km
Yoshigadaira Yoshigadaira Harakawa 1970 170 km
Sarutachosuichi Saruta Sarutagawa 1955 171 km
Goshoko Gosho Shizukuishigawa 1981 172 km
1999 172 km
Yunoiriko Higashiyama Yugawa 1982 172 km
Sotoyama Sotoyama Sotoyamagawa 1943 175 km
Nanbukatafujiko Shijushida Kitakamigawa 1968 175 km
Hatoriko Hatori Tsurunumagawa 1955 176 km
Mizunuma Mizunuma Hanazonokawa 1966 176 km
Natsuse Natsuse Tamagawa 1940 177 km
Jindaichoseichi Jindai Tamagawa 1940 177 km
Miomotechosuichi Miomote Miomotegawa 1953 178 km
Iwafune Iwafune Arakawa 1961 178 km
Okuatsumiko Atsumigawa Atsumigawa 1986 178 km
Gandoko Gando Tandogawa 1960 179 km
Wakasatoko Okawa Agagawa 1987 183 km
Kuromorigawadaiichicosuichi Kuromorigawadaiichi Kuromorigawa 1976 184 km
Oishiko Oishi Oishigawa 1980 185 km
Ouchi Ouchi Onogawa 1991 186 km
Tainaigawa Tainaigawa Tainaigawa 1979 190 km
Shusenko Yoroihata Tamagawa 1957 194 km
Kajigawa Kajigawachisui Kajigawa 1974 196 km
Hosenko Tamagawa Tamagawa 1990 199 km
Miyamako Miyama Nakagawa 1973 200 km
Uchinokurako Uchinokura Uchinokuragawa 1972 201 km
Kawakitako Iwami Sannaigawa 1978 204 km
Sabigawa Sabigawa Sabigawa 1994 210 km
Shiobara Shiobara Hokigawa 1978 212 km
Otakisawatameike Otakisawatameike Michigawa 1937 216 km
Terayama Terayama Miyakawa 1984 221 km
Koaniko Haginari Koanigawa 1966 221 km
Taiheiko Moriyoshi Komatagawa 1953 222 km
Higashikoyako Nishiarakawa Nishiarakawa 1967 227 km
Jajanboike Kozogawa Kozogawa 1985 230 km
Hanekawa Hanekawa Itonagaregawa 1967 244 km

Nuclear plants

Intensity Name Country Reactors Distance
ONAGAWA JAPAN 3 24 km
FUKUSHIMA-DAIICHI JAPAN 6 106 km
FUKUSHIMA-DAINI JAPAN 4 116 km
TOKAI JAPAN 3 217 km

More information

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