Data last collected:
QuakeFactsEvidence report · prepared 6 October 2026https://quakes99.com/entity/nc73351710
USGS nc73351710
9 Mar 2020, 02:59
69km W of Petrolia, CA
A magnitude 5.8 mw earthquake at 3.2 km depth.
Published location
Where is 69km 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.
40.391667, -125.093667
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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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Catalog fields and provenance
Event ID
nc73351710
Coordinates
40.3916667, -125.0936667
Network
nc
Significance
1072
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 69km W of Petrolia, CA earthquake: magnitude 5.8 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.