California earthquakes

M1.9 earthquake 7 km ESE of Mammoth Lakes, California

A magnitude 1.9 earthquake struck 7 km ESE of Mammoth Lakes, California on Mon, Aug 16, 1982, 7:55 AM PDT (14:55 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.2 10 km WNW of Bridgeport, California. 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: 1.9 (md), micro
Local time: Mon, Aug 16, 1982, 7:55 AM PDT
UTC: 1982-08-16 14:55:34 UTC
Depth: -0.6 km (-0.3 mi), shallow
Epicenter: 37.630° N, 118.893° 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 0.8 km horizontally, 0.6 km in depth
Magnitude uncertainty: ±0.18
Depth from: From location
Station coverage gap: 147°
Stations used: 6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077608. Read Tue, Sep 22, 2026, 9:39 PM UTC.