M3.5

USGS earthquake · M3.520 km WSW of Petrolia, CA

Name: M3.5 earthquake at 20 km WSW of Petrolia, CA
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

🇺🇸 - United States

Sep 16, 2026, 2:34 PM UTC · 42 days ago

Map centered on the earthquake at 20 km WSW of Petrolia, CA, with a marker at its epicenter

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Shaking intensity

Strongest contour: Weak (III). Modelled by USGS ShakeMap; contours show where shaking was expected to reach each level, not damage.

Depth20.1 km

Origin timeSep 16, 2026, 2:34 PM UTC

Coordinates40.285, -124.519

Tsunami flagNot reported

Estimated shakingWeak (III)Modelled by USGS ShakeMap

Reported shakingWeak (III)From 18 public reports

Magnitude scaleMoment magnitude

SolutionReviewed by a seismologist

Who felt it

Nearby places

Petrolia, California20 km WSW of the epicentre
Ferndale, California39 km SW of the epicentre
Rio Dell, California42 km SW of the epicentre

Places listed by USGS. Distances are to the epicentre.

Official source

U.S. Geological Survey

Terremoto preserves this event snapshot for a stable public link. USGS remains the authoritative source for revisions and scientific details. Shaking contours and population estimates come from USGS ShakeMap and PAGER, which revise them as more data arrives.

View the USGS record ↗

USGS earthquake · M3.520 km WSW of Petrolia, CA

Nearby places

U.S. Geological Survey

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