California earthquakes

M2.9 earthquake 8km ESE of Prunedale, CA

A magnitude 2.9 earthquake struck 8km ESE of Prunedale, CA on Mon, May 4, 2020, 9:46 AM PDT (16:46 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.5 16km NW of Pinnacles, CA. This one was a foreshock.

Prunedale forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.9 (Mh), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2020-05-04 16:46:47 UTC
Depth
2.7 km (1.7 mi), shallow
Epicenter
36.752° N, 121.588° W
Felt reports
2
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.5 km horizontally, 0.5 km in depth
Depth from
From location
Station coverage gap
162°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 150 in the 60 days after this one and 42 in the 30 days before it.

After

The first 60 of 150.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73380150. Read Sun, Oct 4, 2026, 8:35 PM UTC.