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 6.1 in Japan on 26 May 2023 10:03 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:	6.1M
Depth:	44.528 Km
Lat/Lon:	35.5179 , 140.519
Event Date:	26 May 2023 10:03 UTC 26 May 2023 19:03 Local
Exposed Population:	2.1 million in MMI V
Source:	NEIC us7000k46f
Inserted at:	26 May 2023 11:03 UTC
INFORM Coping capacity of the alert score:	1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Rapid Impact)		GDACS score
NEIC	0		0
us7000k46f	Scaled population (raster)	0
	C1 rapid impact	0
	C2 rapid impact	0
	Country Vulnerability	0
	INFORM_normalised	0

Maximum expected impact using different data sources.

The green area correspond to areas affected by strong shaking (MMI VI or higher) according to the simulation.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1507714		0	26 May 2023 10:03	6.2M, 44.175km	5.55	N/A (in MMI>=VII)	0m (at 00:00)	00:21	NEIC
1507718		0	26 May 2023 10:03	6.1M, 44.528km	5.38	N/A (in MMI>=VII)	N/A	00:59	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.

Rapid Impact

The results presented below are calculated with the ShakeMap open source software (USGS) using only earthquake hypocenter information to provide a rapid estimation of the ground motion and shaking intensity without taking into account any instrumental observations or earthquake source scaling laws.

Exposed population

The earthquake happened in Japan ,of Kanto (population 38,543,000) . The alertlevel for this event is GREEN

Intensity	Population
	2.1 million people

Affected Provinces

Intensity	Region Province	Country	Population
	Kanto	Japan	2 million people
	Kanto	Japan	10.5 million people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Katakai	Chiba	Japan	City	-	7 km
Hasunuma	Chiba	Japan	Village	-	9 km
Togane	Chiba	Japan	Village	55000 people	13 km
Naruto	Chiba	Japan	City	22000 people	14 km
Yokoshiba	Chiba	Japan	Village	-	16 km
Oami	Chiba	Japan	Village	-	19 km
Ichinomiya	Chiba	Japan	Village	-	22 km
Mobara	Chiba	Japan	City	96000 people	22 km
Tako	Chiba	Japan	City	-	24 km
Asahi Yokaichiba	Chiba	Japan	Village	-	26 km
Narita	Chiba	Japan	City	100000 people	28 km
Chonan	Chiba	Japan	Village	-	29 km
Ohara	Chiba	Japan	City	20000 people	32 km
Sakura	Chiba	Japan	City	180000 people	34 km
Ino	Chiba	Japan	Village	-	35 km
Ushiku	Chiba	Japan	Village	-	36 km
Choshi	Chiba	Japan	City	84000 people	37 km
Chiba	Chiba	Japan	Major city	920000 people	37 km
Omigawa	Chiba	Japan	City	25000 people	38 km
Goi	Chiba	Japan	Village	-	39 km
Namegawa	Chiba	Japan	Village	-	41 km
Ryugasaki	Chiba	Japan	Village	85000 people	43 km
Kansaki	Chiba	Japan	Village	-	44 km
Inuwaka	Chiba	Japan	Village	-	37 km
Yatabe	Ibaraki	Japan	Village	-	39 km
Chiba-nyutaun	Chiba	Japan	Village	-	41 km
Okunoya	Ibaraki	Japan	Village	-	43 km
Katsuura	Chiba	Japan	Village	22000 people	45 km
Idako	Ibaraki	Japan	Village	-	47 km
Kururi	Chiba	Japan	Village	-	47 km
Koda	Ibaraki	Japan	Village	-	49 km
Fujioayashi	Chiba	Japan	Village	-	50 km
Kashima	Ibaraki	Japan	Village	65000 people	51 km
Edosaki	Ibaraki	Japan	Village	21000 people	52 km
Itako	Ibaraki	Japan	Village	25000 people	52 km
Ryugaski	Ibaraki	Japan	Village	-	52 km
Funabashi	Chiba	Japan	City	560000 people	53 km
Kamagaya	Chiba	Japan	City	110000 people	53 km
Aso	Ibaraki	Japan	Village	-	54 km
Kisarazu	Chiba	Japan	City	120000 people	55 km
Negoya	Ibaraki	Japan	Village	-	56 km
Narage	Ibaraki	Japan	Village	-	58 km
Kamogawa	Chiba	Japan	Village	29000 people	58 km
Ichikawa	Chiba	Japan	City	460000 people	58 km
Kihara	Ibaraki	Japan	Village	-	59 km
Abiko	Chiba	Japan	City	130000 people	59 km
Inoue	Ibaraki	Japan	Village	-	60 km
Ushiku	Ibaraki	Japan	Village	79000 people	61 km
Hamatsuga	Ibaraki	Japan	Village	-	61 km
Yamada	Ibaraki	Japan	Village	-	61 km
Matsudo	Chiba	Japan	City	460000 people	62 km
Fuda	Ibaraki	Japan	Village	-	62 km
Kimitsu	Chiba	Japan	Village	92000 people	63 km
Owada	Ibaraki	Japan	Village	-	65 km
Tokyo	Tokyo	Japan	Capital	8.1 million people	65 km
Obari	Ibaraki	Japan	Village	-	68 km
Yoshikawa	Saitama	Japan	Village	60000 people	74 km
Kawasaki	Kanagawa	Japan	Major city	1.3 million people	74 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
Tokyo Narita International	NRT	42	Civ.	Paved	Yes	13100	30 km
Shimoshizu		30				0	36 km
Ryugasaki South		2				0	47 km
Ryugasaki		2				0	51 km
Shimofusa		30	Civ.	Paved	Yes	7300	56 km
Kisarazu		3	Mil.	Paved	Yes	6000	57 km
		26				0	65 km
Tokyo Haneda International	HND	7	Civ.	Paved	Yes	9800	67 km

Ports

Name	LOCODE	Country	Distance
Goi	JPGOI	Japan	38 km
Chiba	JPCHB	Japan	38 km
Anegasaki	JPANE	Japan	39 km
Choshi	JPCHO	Japan	37 km
Kashima	JPKSM	Japan	45 km
Katsuura Ko		Japan	47 km
Katunan Ko		Japan	52 km
Kisarazu	JPKZU	Japan	56 km
Ogasawara	JPOGA	Japan	68 km
Kawasaki	JPKWS	Japan	69 km

Dams

Reservoir	Dam Name	River	Year	Distance
Yamakura	Yamakura	Yamakuragawa	1964	35 km
Takatakiko	Takataki	Yorogawa	1990	38 km
Kasumigaura	Kasumigaura-Kaihatsu	Tonegawa	1995	49 km
Kameyamako	Kameyama	Obitsugawa	1980	51 km
Kori	Kori	Korigawa	1972	61 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.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.