QQuakeFacts
USGS iscgem823402

1 Apr 1968, 08:13

51 km ESE of Hyūga, Japan

A magnitude 6.8 mw earthquake at 33.1 km depth.

Depth33.1 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 51 km ESE of Hyūga, 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.

32.272000, 132.156000

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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
iscgem823402
Coordinates
32.272, 132.156
Network
iscgem
Significance
718