QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgemsup16958202
USGS iscgemsup16958202

24 Jul 1912, 23:24

southeast of Shikoku, Japan

A magnitude 6 mB earthquake at 500 km depth.

Depth500 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated13 December 2025Latest timestamp stored in this record

Published location

Where is southeast of Shikoku, 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.

30.482000, 136.943000

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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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Continue exploring

Nearby events with a similar magnitude

M 6.11

179 km ESE of Nichinan, Japan

M 5.8

166 km E of Nishinoomote, Japan

M 6.35

97 km SSW of Muroto-misakicho, Japan

M 6.7

Izu Islands, Japan region

M 5.3

262 km SSE of Muroto-misakicho, Japan

M 5.3

216 km SE of Kushimoto, Japan

Catalog fields and provenance
Event ID
iscgemsup16958202
Coordinates
30.482, 136.943
Network
iscgemsup
Significance
554