QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001hcd
USGS usp0001hcd
12 Dec 1981, 04:52
111 km SSE of Hirara, Japan
A magnitude 6.3 ms earthquake at 10 km depth.
Published location
Where is 111 km SSE of Hirara, 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.
23.932000, 125.856000
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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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Catalog fields and provenance
Event ID
usp0001hcd
Coordinates
23.932, 125.856
Network
us
Significance
611