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.

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

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

Intensity	Population

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1524219	142.101/38.957	5.5	53.8	3.711	08 Sep 2023 09:52	00:23	(new episode)
2	1524219	142.101/38.957	5.5	53.8	3.711	08 Sep 2023 10:03	00:34	(upd of #1)
3	1524219	142.101/38.957	5.5	53.8	3.711	08 Sep 2023 11:33	02:04	(upd of #2)
4	1524219	142.101/38.957	5.5	53.8	3.711	09 Sep 2023 09:40	1d 00:11	(upd of #3)

Affected Provinces

Intensity	Region Province	Country	Population
	Tohoku	Japan	48000 people
	Tohoku	Japan	3.3 million people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Shirahama	Iwate	Japan	Village	-	34 km
Tomari	Iwate	Japan	Village	-	34 km
Kesennuma	Miyagi	Japan	Village	59000 people	39 km
Tadagoe	Miyagi	Japan	Village	-	40 km
Rikuzen-Takata	Iwate	Japan	Village	-	41 km
Matsuzaki	Miyagi	Japan	Village	-	44 km
Oya	Miyagi	Japan	Village	-	49 km
Motoyoshi	Miyagi	Japan	Village	-	54 km
Minato	Miyagi	Japan	Village	-	55 km
Ryori	Iwate	Japan	Village	-	28 km
Okkirai	Iwate	Japan	Village	-	31 km
Ofunato	Iwate	Japan	Village	37000 people	34 km
Hongo	Iwate	Japan	Village	-	36 km
Kamaishi	Iwate	Japan	City	42000 people	39 km
Imaizumi	Iwate	Japan	Village	-	42 km
Ryoishi	Iwate	Japan	Village	-	44 km
Anto	Iwate	Japan	Village	-	47 km
Ohashi	Iwate	Japan	Village	-	49 km
Fudaba	Iwate	Japan	Village	-	49 km
Setamai	Iwate	Japan	Village	-	49 km
Kutsukake	Iwate	Japan	Village	-	51 km
Otsuchi	Iwate	Japan	Village	16000 people	52 km
Kawaguchi	Iwate	Japan	Village	-	53 km
Sawa	Iwate	Japan	Village	-	53 km
Funakoshi	Iwate	Japan	Village	-	54 km
Oura	Iwate	Japan	Village	-	56 km
Isatomae	Miyagi	Japan	Village	-	57 km
Shimo-orikabe	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
Osawa	Iwate	Japan	Village	-	59 km
Kozawa	Iwate	Japan	Village	-	59 km
Kami-tsuyakawa	Iwate	Japan	Village	-	59 km
Ohara	Iwate	Japan	Village	-	61 km
Surisawa	Iwate	Japan	Village	-	62 km
Terahama	Miyagi	Japan	Village	-	63 km
Yokamachi	Iwate	Japan	Village	-	64 km
Shizugawa	Miyagi	Japan	Village	-	64 km
Tono	Iwate	Japan	Village	27000 people	64 km
Ishihama	Iwate	Japan	Village	-	65 km
Niita	Iwate	Japan	Village	-	66 km
Fujisawa	Iwate	Japan	Village	-	66 km
Semmaya	Iwate	Japan	Village	-	67 km
Otomomachi	Iwate	Japan	Village	-	68 km
Tsukihama	Miyagi	Japan	Village	-	69 km
Oritate	Miyagi	Japan	Village	-	69 km
Tsugaruishi	Iwate	Japan	Village	-	70 km
Oenokawara	Miyagi	Japan	Village	-	70 km
Ohama	Miyagi	Japan	Village	-	70 km
Sarusawa	Iwate	Japan	Village	-	70 km
Futsukamachi	Iwate	Japan	Village	-	70 km
Usuginu	Iwate	Japan	Village	-	72 km
Omoe	Iwate	Japan	Village	-	72 km
Ide	Iwate	Japan	Village	-	73 km
Akasawa	Iwate	Japan	Village	-	73 km
Ogatsu	Miyagi	Japan	Village	-	73 km
Nagasaka	Iwate	Japan	Village	-	74 km
Nekkomachi	Iwate	Japan	Village	-	74 km
Hitokabe	Iwate	Japan	Village	-	74 km
Joyanagi	Iwate	Japan	Village	-	74 km
Maeya	Miyagi	Japan	Village	-	75 km
Sasasawa	Iwate	Japan	Village	-	75 km
Nagatsura	Miyagi	Japan	Village	-	76 km
Neichi	Iwate	Japan	Village	-	76 km
Miyako	Iwate	Japan	City	51000 people	77 km
Kaegura	Iwate	Japan	Village	-	77 km
Haratai	Iwate	Japan	Village	-	77 km
Moichi	Iwate	Japan	Village	-	78 km
Yanaizu	Miyagi	Japan	Village	-	79 km
Okubo	Iwate	Japan	Village	-	80 km
Tassobe	Iwate	Japan	Village	-	81 km
Tamoyama	Iwate	Japan	Village	-	81 km
Onagawahama	Miyagi	Japan	Village	-	81 km
Wakuchi	Iwate	Japan	Village	-	82 km
Esashi	Iwate	Japan	Village	33000 people	83 km
Kariya	Iwate	Japan	Village	-	83 km
Wakayanagi	Miyagi	Japan	Village	-	83 km
Ichinoseki	Iwate	Japan	City	62000 people	84 km
Sanuma	Miyagi	Japan	City	-	84 km
Yagawa	Miyagi	Japan	Village	-	84 km
Iinogawa	Miyagi	Japan	Village	-	84 km
Katasu	Iwate	Japan	Village	-	84 km
Mizusawa	Iwate	Japan	City	61000 people	85 km
Kamimachi	Miyagi	Japan	Village	-	85 km
Hirose	Iwate	Japan	Village	-	85 km
Niiyama	Miyagi	Japan	Village	-	87 km
Taro	Iwate	Japan	Village	-	87 km
Nishino	Miyagi	Japan	Village	-	87 km
Wainai	Iwate	Japan	Village	-	87 km
Watanoha	Miyagi	Japan	Village	-	88 km
Arikabe	Miyagi	Japan	Village	-	88 km
Kamata	Miyagi	Japan	Village	-	89 km
Tsuchisawa	Iwate	Japan	Village	-	89 km
Hiratsudo	Iwate	Japan	Village	-	89 km
Oharahama	Miyagi	Japan	Village	-	90 km
Oshika	Miyagi	Japan	Village	-	90 km
Itsukushi	Iwate	Japan	Village	-	90 km
Ohasama	Iwate	Japan	Village	-	90 km
Sawabe	Miyagi	Japan	Village	-	91 km
Ishinomaki	Miyagi	Japan	City	120000 people	91 km
Kitamata	Iwate	Japan	Village	-	93 km
Maesawa	Iwate	Japan	Village	-	93 km
Wabuchi	Miyagi	Japan	Village	-	93 km
Sasanagane	Iwate	Japan	Village	-	93 km
Nitoda	Miyagi	Japan	Village	-	94 km
Shuku	Iwate	Japan	Village	-	94 km
Kami-ugei	Iwate	Japan	Village	-	94 km
Settai	Iwate	Japan	Village	-	94 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
Ojojibara		70				0	119 km
Kasuminome		5				0	129 km
Ippongibara		304				0	132 km
Sendai	SDJ	5	Civ.	Paved	Yes	9800	137 km

Ports

Name	LOCODE	Country	Distance
Kesennuma Ko		Japan	44 km
Ofunato	JPOFT	Japan	35 km
Kamaishi	JPKIS	Japan	39 km
Yamada		Japan	57 km
Miyako	JPMYK	Japan	76 km
Onagawa	JPONG	Japan	80 km
Ishinomaki	JPISM	Japan	91 km
Fudai		Japan	116 km
Shiogama	JPSGM	Japan	117 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
Kurikoma	Kurikoma	Sanhazamagawa	1961	103 km
	Isawa	Isawa	2013	104 km
Ishibuchiko	Ishibuchi	Isawagawa	1953	105 km
Kejonuma	Kejonuma	Tajirigawa	1995	105 km
Ishibane	Ishibane	Wagagawa	1954	107 km
Hanayamako	Hanayama	Hazamagawa	2004	109 km
Heiannomizuumi	Sannokai	Takinagawa	2001	111 km
Kinshuko	Yuda	Wagagawa	1964	112 km
Toyosawako	Toyosawa	Toyosawagawa	1961	113 km
Nanbukatafujiko	Shijushida	Kitakamigawa	1968	121 km
Araoko	Naruko	Eaigawa	1958	123 km
Goshoko	Gosho	Shizukuishigawa	1981	123 km
Nanatsumoriko	Minamikawa	Minamikawa	1987	125 km
Meigenko	Urushizawa	Narusegawa	1980	134 km
Nanakita	Nanakita	Nanakitagawa	1984	136 km
Tarumizuko	Tarumizu	Masudagawa	1976	140 km
Okurako	Okura	Okuragawa	1961	140 km
Fujinumachosuichi	Fujimuna	Ebanagawa	1948	249 km

Nuclear plants

Intensity	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
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