QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ci14383980
USGS ci14383980

29 Jul 2008, 19:42

5km S of Chino Hills, CA

A magnitude 5.4 mw earthquake at 15.5 km depth.

Depth15.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated7 August 2024Latest timestamp stored in this record

Published location

Where is 5km S of Chino Hills, CA?

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

33.948500, -117.766333

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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 5.44

20km E of Little Lake, CA

M 5.45

6 km NNE of East Foothills, California

M 5.5

15km ESE of Little Lake, CA

M 5.37

16km W of Searles Valley, CA

M 5.29

24 km NE of San Lucas, California

M 5.29

31km SW of Santa Cruz Is. (E end), CA

Catalog fields and provenance
Event ID
ci14383980
Coordinates
33.9485, -117.7663333
Network
ci
Significance
1095