QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ci3359741
USGS ci3359741

11 Mar 1933, 01:54

The 1933 Long Beach, California Earthquake

A magnitude 6.4 mw earthquake at 6 km depth.

Depth6 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated24 March 2025Latest timestamp stored in this record

Published location

Where is The 1933 Long Beach, 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.

33.630833, -117.999500

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 6.4

1901 Parkfield, California Earthquake

M 6.4

Ridgecrest Earthquake Sequence

M 6.45

Near Morgan Hill, California

M 6.35

22 km S of Davenport, California

M 6.31

16 km SW of Davenport, California

M 6.5

1922 Parkfield, California Earthquake

Catalog fields and provenance
Event ID
ci3359741
Coordinates
33.6308333, -117.9995
Network
ci
Significance
856