QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000hz8g
USGS usp000hz8g
4 Apr 2011, 10:39
103 km E of Iwaki, Japan
A magnitude 5.1 mwc earthquake at 35 km depth.
Published location
Where is 103 km E of Iwaki, 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.
37.049000, 142.046000
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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
usp000hz8g
Coordinates
37.049, 142.046
Network
us
Significance
400