California earthquakes

M4.5 earthquake 25km W of Westmorland, CA

A magnitude 4.5 earthquake struck 25km W of Westmorland, CA on Thu, Nov 26, 1987, 9:39 AM PST (17:39 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M4.6 18km WSW of Westmorland, CA. This one was a foreshock.

Westmorland forecast More in California

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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: 4.5 (ml), light
Local time: Thu, Nov 26, 1987, 9:39 AM PST
UTC: 1987-11-26 17:39:01 UTC
Depth: 1.8 km (1.1 mi), shallow
Epicenter: 33.029° N, 115.888° 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.

Depth from: From location
Station coverage gap: 59°
Stations used: 0

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 ci736607 (also filed as ushis4054, usp0003akc). Read Wed, Sep 30, 2026, 1:11 PM UTC.