4.0

Earthquake Details: 10 km N of Lake Pillsbury, California, United States

Oct 28, 2026, 12:01:11

Depth
11.59 km
Felt reports
14
Source: USGSUpdated: Oct 29, 2026, 12:11 PM UTC

A magnitude 4.0 earthquake occurred on Oct 28, 2026 at 12:01:11. Epicenter: 10 km N of Lake Pillsbury, California, United States. Reported depth: 11.59 km.

Tsunami information

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Time & depth

Local time
Oct 28, 2026, 05:01:11 PDT
UTC
Oct 28, 2026, 12:01:11 UTC
11.59 km · Shallow-focus

Less than 70 km deep. Shaking is often stronger near the epicentre.

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Nearby major cities

Chico
99 km E
Windsor
107 km S
Paradise
117 km E
Santa Rosa
120 km S
Nearby earthquakes · 12
M2.54 km SE of Aromas, CABeforeM2.614 km E of Seven Trees, CABeforeM2.8236 km W of Ferndale, CaliforniaBeforeM2.29 km N of Lake Pillsbury, CAAfterM2.612 km SW of Ridgemark, CAAfterM2.72 km NE of Pacifica, CAAfterM2.65 km WNW of Madera, CAAfterM2.712 km SW of Ridgemark, CAAfterM2.410 km N of Lake Pillsbury, CAAfterM2.722 km SSW of Big Pine, CAAfterM2.929 km W of Petrolia, CAAfterM2.732 km SE of Bodie, CAAfter

Agency measurements

Agencies may use different observations and magnitude scales, and initial estimates can change.

  • USGSM 4.01

    nc75458907

    Depth:
    11.59 km
    Time:
    Updated:
    Oct 29, 2026, 12:11 PM UTC

Technical Details

Depth11.59 km
Significance253
Latitude39.5008
Longitude-122.9522
Event IDnc75458907
Magnitude4.0
Updated:Oct 29, 2026, 12:11:21 UTC

Regional Seismicity

View recent seismic activity near this event:

United StatesCaliforniaChico (Nearest City)

External Resources

YouTube · Earthquake LiveView on USGS Official Site

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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Oct 29, 2026, 12:11 UTC.

Data sources: