California earthquakes

M1.6 earthquake 11km SSW of Tres Pinos, CA

A magnitude 1.6 earthquake struck 11km SSW of Tres Pinos, CA on Thu, Feb 25, 2021, 1:22 AM PST (09:22 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.7 22km SSE of Lopez Point, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-02-25 09:22:20 UTC
Depth
0.4 km (0.3 mi), shallow
Epicenter
36.695° N, 121.369° W
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.

Location uncertainty
About 0.3 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.35
Depth from
From location
Station coverage gap
68°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 67 in the 30 days before it.

After

The first 60 of 141.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73527621. Read Sat, Oct 3, 2026, 9:46 PM UTC.