QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup889607
USGS iscgemsup889607
4 Jun 1955, 18:22
89 km ENE of Miyako, Japan
A magnitude 6.1 mw earthquake at 30 km depth.
Published location
Where is 89 km ENE 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.
40.025000, 142.864000
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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
iscgemsup889607
Coordinates
40.025, 142.864
Network
iscgemsup
Significance
567