QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000gyb1
USGS usp000gyb1
18 Jun 2009, 07:21
Izu Islands, Japan region
A magnitude 5.1 mwc earthquake at 38.8 km depth.
Published location
Where is Izu Islands, Japan region?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
31.300000, 141.752000
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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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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp000gyb1
Coordinates
31.3, 141.752
Network
us
Significance
400