California earthquakes

M1.8 earthquake 7km ENE of Imperial, CA

A magnitude 1.8 earthquake struck 7km ENE of Imperial, CA on Thu, Oct 25, 1979, 11:40 PM PDT (06:40 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.8 10km NNW of Delta, B.C., MX. 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
1.8 (Mh), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1979-10-26 06:40:13 UTC
Depth
16.0 km (9.9 mi), shallow
Epicenter
32.880° N, 115.510° 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 0.7 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.18
Depth from
Operator assigned
Station coverage gap
108°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 199 in the 30 days before it.

After

The first 60 of 195.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3353321. Read Fri, Oct 2, 2026, 12:57 PM UTC.