M3.3 earthquake strikes near Petrolia, CA

A magnitude 3.3 earthquake was recorded near Petrolia, CA at 2026-10-21 18:43 PDT, according to U.S. Geological Survey (USGS). The earthquake was measured at a depth of about 11.0 km. The epicenter was approximately 40 km from Petrolia, CA. Initial USGS data included 6 felt report(s).