QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us6000fsl6
USGS us6000fsl6
7 Oct 2021, 14:41
5 km SW of Chiba, Japan
A magnitude 5.9 mww earthquake at 62 km depth.
Published location
Where is 5 km SW of Chiba, 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.
35.573600, 140.070500
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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
us6000fsl6
Coordinates
35.5736, 140.0705
Network
us
Significance
1136