M3.2 Earthquake 74 km W of Petrolia, CA — October 15, 2026
2026-10-15 10:37:57 UTC (57 min ago) · approx. 2:37 AM UTC-8 local
On October 15, 2026 at 10:37 UTC, a magnitude 3.2 shallow crustal earthquake struck 74 km W of Petrolia, CA, at a depth of 10.7 km and coordinates 40.4165°, -125.1495°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 829 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 91 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-125.1495°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Petrolia, CA?
The magnitude 3.2 earthquake that struck 74 km W of Petrolia, CA on October 15, 2026 at 10:37 UTC had a depth of 10.7 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: nc75449796). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 15, 2026). M3.2 Earthquake 74 km W of Petrolia, CA — October 15, 2026. Retrieved October 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75449796/