QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000hw1b
USGS usp000hw1b
11 Mar 2011, 19:10
off the east coast of Honshu, Japan
A magnitude 5 mb earthquake at 35 km depth.
Published location
Where is off the east coast of Honshu, Japan?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
38.163000, 144.015000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
usp000hw1b
Coordinates
38.163, 144.015
Network
us
Significance
385