QQuakeFacts
QuakeFactsEvidence report · prepared 3 September 2026https://quakes99.com/entity/iscgem883918
USGS iscgem883918

27 Feb 1958, 23:27

133 km SSW of Hengchun, Taiwan

A magnitude 6.3 mw earthquake at 25 km depth.

Depth25 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated26 April 2022Latest timestamp stored in this record

Published location

Where is 133 km SSW of Hengchun, Taiwan?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

20.923000, 120.184000

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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 6.3

59 km NE of Hengchun, Taiwan

M 6.3

13 km E of Basco, Philippines

M 6.3

63 km W of Basco, Philippines

M 6.3

113 km ESE of Hengchun, Taiwan

M 6.3

167 km SSW of Hengchun, Taiwan

M 6.3

74 km WSW of Basco, Philippines

Catalog fields and provenance
Event ID
iscgem883918
Coordinates
20.923, 120.184
Network
iscgem
Significance
613