M 9.1 - 2011 Great Tohoku Earthquake, Japan

Name: M 9.1 - 2011 Great Tohoku Earthquake, Japan
Start: 2011-03-11T05:46:24+00:00
Location: 2011 Great Tohoku Earthquake, Japan

March 11, 2011 at 05:46:24 UTC

Depth: 29.00 km (Shallow)

M 9.1

Great

N/A

PAGER Alert

Tsunami

1,455

Felt Reports

Event Details

Magnitude	9.1 mww
Depth	29.00 km (Shallow)
Location	38.2970N, 142.3730E
Community Intensity	IX (Violent)
Mercalli Intensity	VIII (Severe)
Felt Reports (DYFI)	1,455 people
Tsunami Warning	No
Significance	2184 / 3000
Status	Reviewed
Network	official
USGS Event Page	View on USGS →

Frequently Asked Questions

What does magnitude 9.1 mean?

A magnitude 9.1 earthquake is classified as "Great". Great earthquakes can cause devastating damage over very large areas.

How deep was this earthquake?

This earthquake occurred at a depth of 29.00 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface.

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More M9.0-10.0 Earthquakes

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Data from the USGS Earthquake Hazards Program (ComCat). QuakeScan is not affiliated with the USGS. Event details may be updated as new data becomes available.