Overall Green Earthquake alert in Japan on 23 Sep 2015 14:44 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 4.5 in Japan on 23 Sep 2015 14:44 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This is a preliminary assessment. The final GDACS Alert Level has been/will be published using more detailed information.

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	4.5M
Depth:	73.01 Km
Lat/Lon:	36.3737 , 140.0173
Event Date:	23 Sep 2015 14:44 UTC 23 Sep 2015 23:44 Local
Exposed Population:	33330796 people within 100km
Source:	NEIC
Inserted at:	23 Sep 2015 16:06 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	n.a		n.a
	Scaled population (vector)	n.a
	C1 earthquake	n.a
	C2 earthquake	n.a
	Country Vulnerability	n.a
	INFORM_normalised	n.a

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1098956		n.a	23 Sep 2015 14:44	4.5M, 73.01km	N/A	33.3 million (in 100km)		01:21	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 Kanto (population 38,543,000) . The nearest places are Okuda, Naka-Izumi, Kurogohara, Yatagai, Oizumi, Kobayashi, Kadoi, Moka, Naka, Washijuku, and Kawasaki.

Radius	Population
100 km	33.5 million people
75 km	16.7 million people
50 km	4.5 million people
20 km	620000 people
10 km	150000 people
5 km	28000 people
2 km	3700 people

Affected Provinces

Region Province	Country	Population
Kanto	Japan	38.5 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Okuda	Ibaraki	Japan	Village	-	2 km
Naka-Izumi	Ibaraki	Japan	Village	-	3 km
Kurogohara	Tochigi	Japan	Village	-	3 km
Yatagai	Tochigi	Japan	Village	-	4 km
Oizumi	Ibaraki	Japan	Village	-	6 km
Kobayashi	Tochigi	Japan	Village	-	6 km
Kadoi	Ibaraki	Japan	Village	-	6 km
Moka	Tochigi	Japan	Village	63000 people	7 km
Naka	Tochigi	Japan	Village	-	7 km
Washijuku	Ibaraki	Japan	Village	-	8 km
Nakadate	Ibaraki	Japan	Village	-	8 km
Horigome	Tochigi	Japan	Village	-	8 km
Shimodate	Ibaraki	Japan	City	63000 people	8 km
Shimo-Onuma	Tochigi	Japan	Village	-	8 km
Yamanokami	Ibaraki	Japan	Village	-	8 km
Iwase	Ibaraki	Japan	Village	22000 people	9 km
Nagatsutsumi	Tochigi	Japan	Village	-	9 km
Shimo-Ezure	Ibaraki	Japan	Village	-	9 km
Motogi	Ibaraki	Japan	Village	-	10 km
Kadoge	Ibaraki	Japan	Village	-	10 km
Hara	Tochigi	Japan	Village	-	11 km
Katsuuri	Tochigi	Japan	Village	-	11 km
Nobushimo	Tochigi	Japan	Village	-	11 km
Kaminokawa	Tochigi	Japan	Village	31000 people	11 km
Goshonomiya	Tochigi	Japan	Village	-	11 km
Iigai	Tochigi	Japan	Village	-	12 km
Shimo-Nodono	Ibaraki	Japan	Village	-	12 km
Nishi-Kobana	Ibaraki	Japan	Village	-	12 km
Mashiko	Tochigi	Japan	Village	26000 people	12 km
Ko-Dai	Tochigi	Japan	Village	-	12 km
Higashi-Fuzakashi	Tochigi	Japan	Village	-	12 km
Sone	Ibaraki	Japan	Village	-	13 km
Yakushiji	Tochigi	Japan	Village	-	13 km
Koshio	Ibaraki	Japan	Village	-	13 km
Higashi-Hozui	Ibaraki	Japan	Village	-	14 km
Ebigashima	Ibaraki	Japan	Village	-	14 km
Kurogo	Ibaraki	Japan	Village	-	14 km
Naka-Fukazawa	Tochigi	Japan	Village	-	14 km
Fukuhara	Ibaraki	Japan	Village	-	15 km
Shimo-Oba	Tochigi	Japan	Village	-	15 km
Nanai	Tochigi	Japan	Village	-	15 km
Kami-Onuki	Tochigi	Japan	Village	-	15 km
Koganei	Tochigi	Japan	Village	-	15 km
Kanokubo	Ibaraki	Japan	Village	-	16 km
Toya	Tochigi	Japan	Village	-	16 km
Omasu	Ibaraki	Japan	Village	-	16 km
Sekimoto	Ibaraki	Japan	Village	-	16 km
Obatake	Tochigi	Japan	Village	-	16 km
Wakayagi	Ibaraki	Japan	Village	-	16 km
Takata	Tochigi	Japan	Village	-	16 km
Hanekawa	Tochigi	Japan	Village	-	17 km
Ogoto	Ibaraki	Japan	Village	-	17 km
Oyama	Tochigi	Japan	Village	-	17 km
Emura	Ibaraki	Japan	Village	-	17 km
Ashinuma	Tochigi	Japan	Village	-	17 km
Otsuka	Ibaraki	Japan	Village	-	17 km
Kami-Oshima	Ibaraki	Japan	Village	-	17 km
Kami-Ii	Tochigi	Japan	Village	-	18 km
Nishi-Nakadai	Tochigi	Japan	Village	-	18 km
Uwaso	Ibaraki	Japan	Village	-	18 km
Kurokoma	Ibaraki	Japan	Village	-	18 km
Sakunoya	Ibaraki	Japan	Village	-	19 km
Ubagai	Tochigi	Japan	Village	-	19 km
Hanamigaoka	Tochigi	Japan	Village	-	19 km
Kami-Akasawa	Ibaraki	Japan	Village	-	20 km
Usugi	Ibaraki	Japan	Village	-	20 km
Tochigi	Tochigi	Japan	Village	81000 people	20 km
Horage	Ibaraki	Japan	Village	-	20 km
Tsukuba	Ibaraki	Japan	City	180000 people	20 km
Ishii	Tochigi	Japan	Village	-	20 km
Nagasawa	Ibaraki	Japan	Village	-	20 km
Oyama	Tochigi	Japan	City	150000 people	20 km
Takasai	Ibaraki	Japan	Village	-	20 km
Arajuku	Tochigi	Japan	Village	-	20 km
Amagaya	Tochigi	Japan	Village	-	21 km
Kawaraya	Ibaraki	Japan	Village	-	21 km
Obata	Ibaraki	Japan	Village	-	21 km
Motogi	Tochigi	Japan	Village	-	21 km
Fukuwada	Tochigi	Japan	Village	-	21 km
Okizawa	Tochigi	Japan	Village	-	21 km
Nakamura	Tochigi	Japan	Village	-	21 km
Yoshu	Tochigi	Japan	Village	-	22 km
Kakioka	Ibaraki	Japan	Village	-	22 km
Kasama	Ibaraki	Japan	Village	29000 people	22 km
Mine	Tochigi	Japan	Village	-	22 km
Shimotsuma	Ibaraki	Japan	Village	37000 people	22 km
Takei	Ibaraki	Japan	Village	-	22 km
Inageda	Tochigi	Japan	Village	-	22 km
Ueda	Tochigi	Japan	Village	-	22 km
Shinjuku-Shinden	Ibaraki	Japan	Village	-	22 km
Utsunmiya	Tochigi	Japan	City	-	23 km
Yasuzuka	Tochigi	Japan	Village	-	23 km
Tokura	Ibaraki	Japan	Village	-	23 km
Busshoji	Ibaraki	Japan	Village	-	23 km
Fumiya	Tochigi	Japan	Village	-	23 km
Suginoya	Ibaraki	Japan	Village	-	23 km
Hojo	Ibaraki	Japan	Village	-	23 km
Otsuka	Tochigi	Japan	Village	-	23 km
Narita-Shinden	Ibaraki	Japan	Village	-	24 km
Kawamata	Ibaraki	Japan	Village	-	24 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
Suzumenomiya		82				0	18 km
Utsunomiya	QUT	102	Civ.	Paved	Yes	5500	20 km
		26				0	41 km
Hyakuri		32	Mil.	Paved	Yes	8800	42 km
Chiba-ken		19				0	45 km
Onishi		20				0	50 km
Otawara		201				0	54 km
Ryugasaki		2				0	55 km
Shimo Kolzumi		30				0	56 km
Ryugasaki South		2				0	59 km
Honda		12				0	63 km
Shimofusa		30	Civ.	Paved	Yes	7300	64 km
Tokyo Narita International	NRT	42	Civ.	Paved	Yes	13100	75 km
Iruma		91	Mil.	Paved	Yes	6500	81 km
Shimoshizu		30				0	81 km
Chofu		41	Civ.	Paved	No	3200	90 km
Yokota AFB	OKO	139	Mil.	Paved	Yes	11000	92 km
Tachikawa		95				0	93 km
Tokyo Haneda International	HND	7	Civ.	Paved	Yes	9800	93 km

Ports

Name	LOCODE	Country	Distance
Hitachi	JPHTC	Japan	57 km
Tokyo	JPTYO	Japan	77 km
Katunan Ko		Japan	78 km
Ogasawara	JPOGA	Japan	80 km
Kashima	JPKSM	Japan	81 km
Anegasaki	JPANE	Japan	86 km
Chiba	JPCHB	Japan	86 km
Goi	JPGOI	Japan	94 km
Kawasaki	JPKWS	Japan	96 km

Dams

Reservoir	Dam Name	River	Year	Distance
Jajanboike	Kozogawa	Kozogawa	1985	34 km
Yanakako	Wataraseyusuichi	Watarasegawa	1989	36 km
Miyukiko	Gongendochosetsuchi	Nakagawa	1991	39 km
Higashikoyako	Nishiarakawa	Nishiarakawa	1967	53 km
Terayama	Terayama	Miyakawa	1984	54 km
Imaichichoseichi	Imaichi	Togawa	1988	60 km
Kusakiko	Kusaki	Watarasegawa	1976	61 km
Chuzenjiko	Chuzenji	Daiyagawa	1998	62 km
Kuriyamachoseichi	Kuriyama	Nebesawagawa	1988	62 km
Kasumigaura	Kasumigaura-Kaihatsu	Tonegawa	1995	64 km
Ikariko	Ikari	Ojikagawa	1956	65 km
Yashioko	Kawaji	Kunugawa	1983	65 km
Shiobara	Shiobara	Hokigawa	1978	65 km
Kurobe	Kurobe	Kinugawa	1912	66 km
Sabigawa	Sabigawa	Sabigawa	1994	70 km
Kawamatako	Kawamata	Kinugawa	1966	72 km
Marunumako	Marunuma	Otakigawa	1931	79 km
Mizunuma	Mizunuma	Hanazonokawa	1966	79 km
Miyamako	Miyama	Nakagawa	1973	80 km
Sonoharako	Sonohara	Katashinagawa	1965	81 km
Miyazawako	Miyazawatameike	Koazegawa	1941	83 km
Tamako	Murayamashimo	Tamagawa	2008	85 km
Sayamako	Yamaguchi	Tamagawa	2002	86 km
Shitokiko	Shitoki	Shitokigawa	1983	86 km
Tamako	Murayamakami	Tamagawa	1924	87 km
Makabechoseichi	Makabe	Tonegawa	1928	88 km
Takashibako	Takashiba	Samekawa	1961	91 km
Kannako	Shimokubo	Kannagawa	1968	94 km
Naguriko	Arima	Arimagawa	1985	94 km
Narusawako	Narusawa	Harunashirakawa	1950	96 km
Tanbarako	Tanbara	Hocchigawa	1981	97 km
Otsumata	Otsumata	Otsumatagawa	1968	99 km
Yamakura	Yamakura	Yamakuragawa	1964	99 km
Hatoriko	Hatori	Tsurunumagawa	1955	100 km
Fujiwarako	Fujiwara	Tonegawa	1957	100 km

Nuclear plants

Name	Country	Reactors	Distance
TOKAI	JAPAN	3	54 km

More information

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

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