QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem822151
USGS iscgem822151
16 May 1968, 17:13
146 km E of Miyako, Japan
A magnitude 6.7 mw earthquake at 25.2 km depth.
Published location
Where is 146 km E 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.
39.801000, 143.635000
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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
iscgem822151
Coordinates
39.801, 143.635
Network
iscgem
Significance
691