QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem847550
USGS iscgem847550

18 May 1966, 08:32

86 km SSW of Topolobampo, Mexico

A magnitude 6 mw earthquake at 20 km depth.

Depth20 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 86 km SSW of Topolobampo, Mexico?

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

24.834000, -109.232000

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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

61 km ENE of Santa Rosalía, Mexico

M 6

93 km W of Las Grullas Margen Derecha, Mexico

M 6

93 km ENE of La Rivera, Mexico

M 6

71 km W of Las Grullas Margen Derecha, Mexico

M 6

150 km SW of Empaque Tarriba, Mexico

M 6

85 km ENE of Loreto, Mexico

Catalog fields and provenance
Event ID
iscgem847550
Coordinates
24.834, -109.232
Network
iscgem
Significance
554