QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/nc73355700
USGS nc73355700
18 Mar 2020, 22:08
15km W of Petrolia, CA
A magnitude 5.2 mw earthquake at 28.6 km depth.
Published location
Where is 15km W of Petrolia, 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.
40.347500, -124.456167
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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
nc73355700
Coordinates
40.3475, -124.4561667
Network
nc
Significance
1058