California earthquakes

M1.7 earthquake 17km E of Ocotillo, CA

A magnitude 1.7 earthquake struck 17km E of Ocotillo, CA on Mon, May 17, 2021, 2:00 PM PDT (21:00 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.3 11km W of Calipatria, 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
1.7 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-05-17 21:00:44 UTC
Depth
5.4 km (3.4 mi), shallow
Epicenter
32.750° N, 115.812° 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, 0.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
51°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 194 in the 60 days after this one and 90 in the 30 days before it.

After

The first 60 of 194.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39656415. Read Sun, Oct 4, 2026, 2:56 PM UTC.