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M3.3 Earthquake — 14 km SE of Petrolia, CA

M3.3
40.2345°N, 124.1708°W·US-CA
Started 2d ago
USGS data as of
Event Details
Typeearthquake
SeverityM3.3
Statusactive
Location40.2345°N, 124.1708°W (CA)
Started2026-10-22T01:43:10.4+00:00
Last Updated2026-10-23T01:40:39.022+00:00
Sourceusgs
Source URLearthquake.usgs.gov
Confidence1.00
Impact Zones — modeled
Affected Zone
Shaking felt. Minor damage possible in vulnerable structures.
16.8 km

Zone estimates are based on scientific models and may differ from actual local conditions.

Impact Analysis
Population Exposed2,660
Schools3
Fire Stations7

Population from ACS 5-Year 2022 tract sampling; structure counts from Microsoft Building Footprints or Census ACS housing data, capped by USGS NLCD 2021 developed land. Estimates for situational awareness — not for actuarial, regulatory, or underwriting use.

Historical Comparison
2014 CA Earthquake51% match

M4.24 Earthquake in CA, 18km from current event

CA
2019 CA Earthquake50% match

M4.19 Earthquake in CA, 29km from current event

CA
2019 CA Earthquake49% match

M4.19 Earthquake in CA, 33km from current event

CA

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

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Related
Humboldt County, CA disaster historyAll US hazard profilesScoring methodology

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Zone estimates are based on scientific models and may differ from actual local conditions.