California earthquakes

M3.2 earthquake 2 km SSW of Edna, California

A magnitude 3.2 earthquake struck 2 km SSW of Edna, California on Sun, Feb 22, 1981, 10:12 PM PST (06:12 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.6 17 km NW of Parkfield, California. 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: 3.2 (ML, local (Richter)), minor
Magnitude from: Northern California Seismic System
Local time: Sun, Feb 22, 1981, 10:12 PM PST
UTC: 1981-02-23 06:12:50 UTC
Depth: -0.2 km (-0.1 mi), shallow
Epicenter: 35.181° N, 120.629° W
Region: California
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.2	ML, local (Richter)	Northern California Seismic System	Preferred · Final · 0 stations
3.4	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed
3.38	ML, local (Richter)	Southern California Seismic Network	Final · ±0.289 · 5 stations

What happened

The USGS’s account of the effects of this earthquake.

FELT AT SAN LUIS OBISPO, ARROYO GRANDE, AND GROVER CITY.

From the USGS event page for nc1060677. U.S. Geological Survey text and figures are in the public domain.

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, 0.4 km in depth
Depth from: From location
Station coverage gap: 158°
Stations used: 40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 33 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1060677 (also filed as usp0001cba, ci3317207). Read Thu, Oct 1, 2026, 10:47 PM UTC.