QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem895084
USGS iscgem895084

28 Dec 1951, 09:20

10 km SSE of Coacoyulichán, Mexico

A magnitude 6.6 mw earthquake at 30.7 km depth.

Depth30.7 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated26 April 2022Latest timestamp stored in this record

Published location

Where is 10 km SSE of Coacoyulichán, 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.

16.716000, -98.883000

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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 6.51

4 km ESE of Santa María Jicaltepec, Mexico

M 6.6

15 km N of San Luis de La Loma, Mexico

M 6.46

14 km S of Santiago Tepextla, Mexico

M 6.45

71 km SSW of Papanoa, Mexico

M 6.45

6 km SSW of El Polvorín, Mexico

M 6.42

131 km S of San Andrés Playa Encantada (El Podrido), Mexico

Catalog fields and provenance
Event ID
iscgem895084
Coordinates
16.716, -98.883
Network
iscgem
Significance
660