QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem902745
USGS iscgem902745

6 Nov 1938, 08:53

116 km E of Namie, Japan

A magnitude 7.7 mw earthquake at 30 km depth.

Depth30 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated25 April 2022Latest timestamp stored in this record

Published location

Where is 116 km E of Namie, 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.

37.382000, 142.305000

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Map data © OpenStreetMap contributors

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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Nearby events with a similar magnitude

M 7.7

69 km ESE of Kitaibaraki, Japan

M 7.7

116 km ESE of Namie, Japan

M 7.8

105 km E of Iwaki, Japan

M 7.6

141 km ESE of Namie, Japan

M 7.85

5 km E of Tateyama, Japan

M 7.9

174 km SE of Katsuura, Japan

Catalog fields and provenance
Event ID
iscgem902745
Coordinates
37.382, 142.305
Network
iscgem
Significance
912