QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem867525
USGS iscgem867525
7 May 1964, 08:58
83 km WSW of Fukaura, Japan
A magnitude 7 mw earthquake at 26.8 km depth.
Published location
Where is 83 km WSW of Fukaura, 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.
40.349000, 139.026000
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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
iscgem867525
Coordinates
40.349, 139.026
Network
iscgem
Significance
754