California earthquakes

M1.6 earthquake 2km NW of Lennox, CA

A magnitude 1.6 earthquake struck 2km NW of Lennox, CA on Mon, Apr 5, 2021, 5:46 PM PDT (00:46 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M3.5 5km WSW of Hermosa Beach, CA. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-04-06 00:46:48 UTC
Depth
22.1 km (13.8 mi), shallow
Epicenter
33.948° N, 118.368° 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 0.4 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
72°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 68 in the 60 days after this one and 68 in the 30 days before it.

After

The first 60 of 68.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39840096. Read Sun, Oct 4, 2026, 3:14 PM UTC.