California earthquakes

M4.5 earthquake 8 km NE of Corralitos, California

A magnitude 4.5 earthquake struck 8 km NE of Corralitos, California on Wed, Aug 18, 1982, 1:43 AM PDT (08:43 UTC), 12 km (7 mi) below the surface.

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The earthquake

Magnitude: 4.5 (ml), light
Local time: Wed, Aug 18, 1982, 1:43 AM PDT
UTC: 1982-08-18 08:43:49 UTC
Depth: 11.8 km (7.4 mi), shallow
Epicenter: 37.035° N, 121.730° 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.

Location uncertainty: About 0.2 km horizontally, 0.3 km in depth
Depth from: From location
Station coverage gap: 36°
Stations used: 100

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 178 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 178.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077693 (also filed as ushis3759, usp0001p43). Read Tue, Sep 22, 2026, 3:35 PM UTC.