Overall Green Earthquake alert in Japan on 08 Sep 2023 09:28 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 5.5 in Japan on 08 Sep 2023 09:28 UTC

Hazard models

Rapid Impact

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:	5.5M
Depth:	53.8 Km
Lat/Lon:	38.9566 , 142.1006
Event Date:	08 Sep 2023 09:28 UTC 08 Sep 2023 18:28 Local
Exposed Population:	160 thousand in MMI IV
Source:	NEIC us7000ku4z
Inserted at:	08 Sep 2023 09:48 UTC
INFORM Coping capacity of the alert score	1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us7000ku4z	Scaled population (vector)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	1

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1524219		0	08 Sep 2023 09:28	5.5M, 53.8km	3.71	N/A (in MMI>=VII)		00:19	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 216) . The nearest places are Sakihama, Nonomae, Okubo, Koishihama, Ryori, Shimo-Horei, Attari, Urahama, Oishi, Okkirai, and Ohama.

Radius	Population
100 km	1.1 million people
75 km	330000 people
50 km	180000 people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Region Province	Country	Population
Tohoku	Japan	<1000 people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Sakihama	Iwate	Japan	Village	-	27 km
Nonomae	Iwate	Japan	Village	-	27 km
Okubo	Iwate	Japan	Village	-	28 km
Koishihama	Iwate	Japan	Village	-	28 km
Ryori	Iwate	Japan	Village	-	28 km
Shimo-Horei	Iwate	Japan	Village	-	30 km
Attari	Iwate	Japan	Village	-	30 km
Urahama	Iwate	Japan	Village	-	31 km
Oishi	Iwate	Japan	Village	-	31 km
Okkirai	Iwate	Japan	Village	-	31 km
Nagasaki	Iwate	Japan	Village	-	31 km
Kurosaki	Iwate	Japan	Village	-	33 km
Shirahama	Iwate	Japan	Village	-	34 km
Kogakuchi	Iwate	Japan	Village	-	34 km
Tomari	Iwate	Japan	Village	-	34 km
Hosaura	Iwate	Japan	Village	-	34 km
Shimo-Funato	Iwate	Japan	Village	-	34 km
Ofunato	Iwate	Japan	Village	37000 people	34 km
Kojirahama	Iwate	Japan	Village	-	34 km
Tatamiishi	Iwate	Japan	Village	-	35 km
Hongo	Iwate	Japan	Village	-	36 km
Heida	Iwate	Japan	Village	-	37 km
Sakari	Iwate	Japan	Village	-	37 km
Kami-Heida	Iwate	Japan	Village	-	38 km
Wakinosawa	Iwate	Japan	Village	-	39 km
Kesennuma	Miyagi	Japan	Village	59000 people	39 km
Sakihama	Miyagi	Japan	Village	-	39 km
Kamaishi	Iwate	Japan	City	42000 people	39 km
Nakasato	Iwate	Japan	Village	-	40 km
Shuku	Miyagi	Japan	Village	-	40 km
Tadagoe	Miyagi	Japan	Village	-	40 km
Koharagi	Miyagi	Japan	Village	-	41 km
Rikuzen-Takata	Iwate	Japan	Village	-	41 km
Imaizumi	Iwate	Japan	Village	-	42 km
Uranohama	Miyagi	Japan	Village	-	43 km
Sekizawa	Iwate	Japan	Village	-	43 km
Tsurugaura	Miyagi	Japan	Village	-	43 km
Hakozaki	Iwate	Japan	Village	-	44 km
Ryoishi	Iwate	Japan	Village	-	44 km
Matsuzaki	Miyagi	Japan	Village	-	44 km
Tsubonosawa	Iwate	Japan	Village	-	45 km
Suwa	Iwate	Japan	Village	-	45 km
Hama	Miyagi	Japan	Village	-	45 km
Unozumai	Iwate	Japan	Village	-	45 km
Nakase	Miyagi	Japan	Village	-	46 km
Uchikoshi	Iwate	Japan	Village	-	46 km
Hinata	Iwate	Japan	Village	-	46 km
Akuao	Miyagi	Japan	Village	-	47 km
Anto	Iwate	Japan	Village	-	47 km
Nakasone	Iwate	Japan	Village	-	47 km
Kirikiri	Iwate	Japan	Village	-	48 km
Oku-Tsuchikura	Iwate	Japan	Village	-	48 km
Oya	Miyagi	Japan	Village	-	49 km
Ohashi	Iwate	Japan	Village	-	49 km
Fudaba	Iwate	Japan	Village	-	49 km
Setamai	Iwate	Japan	Village	-	49 km
Hiraiso	Miyagi	Japan	Village	-	51 km
Kutsukake	Iwate	Japan	Village	-	51 km
Yokamachi	Iwate	Japan	Village	-	51 km
Otsuchi	Iwate	Japan	Village	16000 people	52 km
Shizu	Iwate	Japan	Village	-	52 km
Koyatori	Iwate	Japan	Village	-	53 km
Kawaguchi	Iwate	Japan	Village	-	53 km
Hashino	Iwate	Japan	Village	-	53 km
Ohata	Iwate	Japan	Village	-	53 km
Sawa	Iwate	Japan	Village	-	53 km
Funakoshi	Iwate	Japan	Village	-	54 km
Natari	Miyagi	Japan	Village	-	54 km
Yokouchi	Iwate	Japan	Village	-	54 km
Motoyoshi	Miyagi	Japan	Village	-	54 km
Kesaiso	Miyagi	Japan	Village	-	55 km
Tomarihama	Miyagi	Japan	Village	-	55 km
Minato	Miyagi	Japan	Village	-	55 km
Oura	Iwate	Japan	Village	-	56 km
Koizumi	Miyagi	Japan	Village	-	56 km
Sukuiso	Iwate	Japan	Village	-	56 km
Isatomae	Miyagi	Japan	Village	-	57 km
Shimo-orikabe	Iwate	Japan	Village	-	57 km
Shimo-Omata	Iwate	Japan	Village	-	57 km
Inohana	Miyagi	Japan	Village	-	57 km
Shimo-Yashiki	Iwate	Japan	Village	-	57 km
Tsuya	Miyagi	Japan	Village	-	58 km
Yamada	Iwate	Japan	Village	20000 people	58 km
Akabane	Iwate	Japan	Village	-	59 km
Shimo-Tsuyakawa	Iwate	Japan	Village	-	59 km
Sekinoue	Iwate	Japan	Village	-	59 km
Osawa	Iwate	Japan	Village	-	59 km
Hatakenaka	Iwate	Japan	Village	-	59 km
Kozawa	Iwate	Japan	Village	-	59 km
Kami-tsuyakawa	Iwate	Japan	Village	-	59 km
Ota	Iwate	Japan	Village	-	60 km
Tsukuya	Iwate	Japan	Village	-	60 km
Horinouchi	Iwate	Japan	Village	-	60 km
Magome	Miyagi	Japan	Village	-	61 km
Ohara	Iwate	Japan	Village	-	61 km
Aratohama	Miyagi	Japan	Village	-	62 km
Shizusawa	Iwate	Japan	Village	-	62 km
Haraigawa	Miyagi	Japan	Village	-	62 km
Surisawa	Iwate	Japan	Village	-	62 km
Kodaki	Miyagi	Japan	Village	-	62 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	98 km
Hanamaki	HNA	91	Civ.	Paved	Yes	6500	99 km

Ports

Name	LOCODE	Country	Distance
Ofunato	JPOFT	Japan	35 km
Kamaishi	JPKIS	Japan	39 km
Kesennuma Ko		Japan	44 km
Yamada		Japan	57 km
Miyako	JPMYK	Japan	76 km
Onagawa	JPONG	Japan	80 km
Ishinomaki	JPISM	Japan	91 km

Dams

Reservoir	Dam Name	River	Year	Distance
Taseko	Tase	Sarugaishigawa	1954	80 km
Naganuma	Naganuma	Hazamagawa	2005	87 km
Senganishitameike	Senganishi	Shukunaigawa	1934	99 km

Nuclear plants

Name	Country	Reactors	Distance
ONAGAWA	JAPAN	3	81 km

More information

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

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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