QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/nc21143281
USGS nc21143281
13 Jan 2001, 13:08
off the coast of Northern California
A magnitude 5.4 mw earthquake at 2.2 km depth.
Published location
Where is off the coast of Northern 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.
40.755667, -125.244500
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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
nc21143281
Coordinates
40.7556667, -125.2445
Network
nc
Significance
624