QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ci10233309
USGS ci10233309
26 Feb 2007, 12:21
52km W of Ferndale, CA
A magnitude 5.4 mh earthquake at 5 km depth.
Published location
Where is 52km W of Ferndale, 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.
40.642000, -124.870000
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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
ci10233309
Coordinates
40.642, -124.87
Network
ci
Significance
449