QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ci3347678
USGS ci3347678
9 Feb 1971, 15:00
1971 San Fernando Earthquake, California
A magnitude 6.6 mw earthquake at 9 km depth.
Published location
Where is 1971 San Fernando Earthquake, California?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
34.416000, -118.370000
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
ci3347678
Coordinates
34.416, -118.37
Network
ci
Significance
1540