Overall Red Earthquake alert in Japan on 11 Mar 2011 05:46 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 9 Earthquake and Tsunami (12 m) in Japan on 11 Mar 2011 05:46 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

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

Earthquake Magnitude:	9.0M
Depth:	32 Km
Lat/Lon:	38.322 , 142.369
Event Date:	11 Mar 2011 05:46 UTC 11 Mar 2011 14:46 Local
Exposed Population:	6130000 people in MMI 6.1 million (in MMI>=VII)
Source:	NEIC at00lhvpd9
Inserted at:	02 Feb 2017 13:06 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake	Tsunami		GDACS score
NEIC	0	3		3
at00lhvpd9	Scaled population (vector)	Max wave scenario	0m
	C1 earthquake	Max wave realtime	11.95m
	C2 earthquake
	Country Vulnerability
	INFORM_normalised

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	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
104706	3	11 Mar 2011 05:46	7.9M, 24.4km	N/A	10 thousand (in 100km)	4.2m (at 00:34)	2155d 07:19	NEIC
104707	3	11 Mar 2011 05:46	7.9M, 10km	N/A	No people affected (in 100km)	4.4m (at 00:36)	2155d 07:20	NEIC
104708	3	11 Mar 2011 05:46	8.8M, 24.4km	N/A	10 thousand (in 100km)	10.7m (at 00:36)	2155d 07:19	NEIC
104709	2	11 Mar 2011 05:46	7.9M, 10km	N/A	No people affected (in 100km)	1.8m (at 06:29)	00:43	JMA
104710	3	11 Mar 2011 05:46	8.8M, 24.4km	N/A	320 thousand (in 100km)	8.6m (at 06:21)	00:46	NEIC
104712	3	11 Mar 2011 05:46	8.8M, 24.4km	N/A	320 thousand (in 100km)	8.6m (at 06:21)	00:48	NEIC
104714	3	11 Mar 2011 05:46	8.8M, 24.4km	N/A	320 thousand (in 100km)	8.6m (at 06:21)	00:50	NEIC
104715	3	11 Mar 2011 05:46	8.4M, 10km	N/A	No people affected (in 100km)	8.3m (at 00:36)	2155d 07:20	NEIC
104716	3	11 Mar 2011 05:46	8.8M, 24.4km	N/A	320 thousand (in 100km)	8.6m (at 06:21)	00:53	NEIC
104717	3	11 Mar 2011 05:46	8.8M, 10km	N/A	No people affected (in 100km)	16.4m (at 00:42)	2155d 07:20	NEIC
104723	3	11 Mar 2011 05:46	8.9M, 24.4km	N/A	10 thousand (in 100km)	10.7m (at 00:36)	2155d 07:19	NEIC
105456	3	11 Mar 2011 05:46	9M, 32km	N/A	6.1 million (in MMI>=VII)	12m (at 00:48)	2155d 07:19	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 696,017) . The alertlevel for this event is Orange

Intensity	Population
	770000 people
	no people
	no people
	no people

Shakemaps Timeline

Alert	Shake id #	Score	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
	1	0	104706	38.322/142.369	7.9	24.4	0	17 Oct 2016 09:46	2047d 03:59	(new episode)

Affected Provinces

Intensity	Region Province	Country	Population
	Tohoku	Japan	700000 people
	Kanto	Japan	71000 people

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
Kasuminome		5				0	126 km
Sendai	SDJ	5	Civ.	Paved	Yes	9800	129 km
Hyakuri		32	Mil.	Paved	Yes	8800	294 km

Ports

Intensity	Name	LOCODE	Country	Distance
	Onahama	JPONA	Japan	200 km

Dams

Intensity	Reservoir	Dam Name	River	Year	Distance
	Naganuma	Naganuma	Hazamagawa	2005	115 km
	Kejonuma	Kejonuma	Tajirigawa	1995	127 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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