QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000caua
USGS usp000caua
20 Oct 2003, 00:27
51 km SW of Nemuro, Japan
A magnitude 5.1 mwc earthquake at 83.9 km depth.
Published location
Where is 51 km SW of Nemuro, 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.
43.021000, 145.093000
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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
usp000caua
Coordinates
43.021, 145.093
Network
us
Significance
400