QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0002u8k
USGS usp0002u8k
21 May 1986, 06:47
137 km E of Shikotan, Russia
A magnitude 6.3 mw earthquake at 39.1 km depth.
Published location
Where is 137 km E of Shikotan, Russia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
43.684000, 148.416000
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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
usp0002u8k
Coordinates
43.684, 148.416
Network
us
Significance
611