QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0006qh3
USGS usp0006qh3
28 Dec 1994, 12:19
off the east coast of Honshu, Japan
A magnitude 7.8 mw earthquake at 26.5 km depth.
Published location
Where is off the east coast of Honshu, 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.
40.525000, 143.419000
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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
usp0006qh3
Coordinates
40.525, 143.419
Network
us
Significance
936