QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem822541
USGS iscgem822541
22 May 1968, 20:29
55 km ENE of Noda, Japan
A magnitude 6 mw earthquake at 45.4 km depth.
Published location
Where is 55 km ENE of Noda, 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.
40.290000, 142.429000
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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
iscgem822541
Coordinates
40.29, 142.429
Network
iscgem
Significance
554