QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ci15481673
USGS ci15481673
29 Mar 2014, 04:09
2km NW of Brea, CA
A magnitude 5.1 mw earthquake at 5.1 km depth.
Published location
Where is 2km NW of Brea, 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.
33.932500, -117.915833
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.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
ci15481673
Coordinates
33.9325, -117.9158333
Network
ci
Significance
1280