QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem913126
USGS iscgem913126

21 Apr 1918, 23:32

The 1918 San Jacinto, California Earthquake

A magnitude 6.7 mw earthquake at 10 km depth.

Depth10 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated9 February 2024Latest timestamp stored in this record

Published location

Where is The 1918 San Jacinto, California Earthquake?

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

33.762000, -116.972000

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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 6.6

The 1942 Fish Creek Mountains, California Earthquake

M 6.6

The 1968 Borrego Mountain, California Earthquake

M 6.6

The 1987 Superstition Hills, California Earthquake

M 6.9

The 1940 Imperial Valley, California Earthquake

M 6.5

The 1947 Manix, California Earthquake

M 6.4

The 1954 San Jacinto Fault, California Earthquake

Catalog fields and provenance
Event ID
iscgem913126
Coordinates
33.762, -116.972
Network
iscgem
Significance
691