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OFFICIAL · Infrastructure
1 source
Observed · Updated
111 km W of Petrolia, CA
Location 40.407, -125.585. ARC Warning did not create the underlying report.
Official
U.S. Geological Survey
U.S. Geological Survey, Nov 5 2026The alert type is the category the source published. ARC Warning does not rename it and does not add an outcome the source did not publish.
Official means one official source published the record.
The label describes how the record was filed. It is not a statement about anyone's intent.
High, medium, and low are ARC Warning display labels for how the record was filed. They are not a forecast.
When the source published its own number, such as an earthquake magnitude, that number is the measurement. The display label does not replace it.
Stable URL: https://arcwarning.com/event/f4c9ea65-f4be-415c-ad71-d0905d37e49f
APA
ARC Warning. (2026). M 5.0 - 111 km W of Petrolia, CA. https://arcwarning.com/event/f4c9ea65-f4be-415c-ad71-d0905d37e49f
MLA
"M 5.0 - 111 km W of Petrolia, CA." ARC Warning, 2026-11-12, https://arcwarning.com/event/f4c9ea65-f4be-415c-ad71-d0905d37e49f.
Plain
M 5.0 - 111 km W of Petrolia, CA. ARC Warning. https://arcwarning.com/event/f4c9ea65-f4be-415c-ad71-d0905d37e49f