QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem788703
USGS iscgem788703
29 Jan 1971, 22:58
Sea of Okhotsk
A magnitude 6.9 mw earthquake at 538.9 km depth.
Published location
Where is Sea of Okhotsk?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
51.621000, 151.011000
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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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Catalog fields and provenance
Event ID
iscgem788703
Coordinates
51.621, 151.011
Network
iscgem
Significance
724