QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0006at4
USGS usp0006at4
8 Apr 1994, 02:10
182 km NE of Miyako, Japan
A magnitude 6.4 mwb earthquake at 13.3 km depth.
Published location
Where is 182 km NE of Miyako, 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.
40.608000, 143.683000
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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
usp0006at4
Coordinates
40.608, 143.683
Network
us
Significance
630