QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00003v6
USGS usp00003v6

18 Oct 1973, 11:49

1 km SW of Emiliano Zapata, Mexico

A magnitude 6 mb earthquake at 45 km depth.

Depth45 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 1 km SW of Emiliano Zapata, 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.

19.379000, -104.975000

Open the interactive map ↗

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.

Need a current safety answer?

Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

Open the USGS event →

Continue exploring

Nearby events with a similar magnitude

M 6

180 km SSW of Barra de Navidad, Mexico

M 6

217 km SW of La Cruz de Loreto, Mexico

M 6

189 km SW of La Cruz de Loreto, Mexico

M 6

13 km SSE of Cuyutlán, Mexico

M 6

241 km SW of La Cruz de Loreto, Mexico

M 6

215 km SW of La Cruz de Loreto, Mexico

Catalog fields and provenance
Event ID
usp00003v6
Coordinates
19.379, -104.975
Network
us
Significance
554