California earthquakes

M1.5 earthquake 30 km ENE of Bridgeport, California

A magnitude 1.5 earthquake struck 30 km ENE of Bridgeport, California on Thu, Jan 21, 2021, 10:06 AM PST (18:06 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M3.8 30 km SSE of Mina, Nevada. This one was a foreshock.

Bridgeport forecast More in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 1.5 (ML, local (Richter)), micro
Magnitude from: Nevada Seismological Laboratory
Local time: Thu, Jan 21, 2021, 10:06 AM PST
UTC: 2021-01-21 18:06:45 UTC
Depth: 16.5 km (10.3 mi), shallow
Epicenter: 38.334° N, 118.902° W
Region: California
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty: ±0.68
Station coverage gap: 300°, poorly surrounded by stations
Stations used: 9

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nn00798361. Read Mon, Oct 5, 2026, 7:43 AM UTC.