California earthquakes

M2.1 earthquake 8 km SSE of San Juan Bautista, California

A magnitude 2.1 earthquake struck 8 km SSE of San Juan Bautista, California on Sun, Apr 21, 2002, 9:21 PM PDT (04:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.9 5 km SSW of Gilroy, California. This one was a foreshock.

San Juan Bautista forecast More in California

Map

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

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The earthquake

Magnitude: 2.1 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Sun, Apr 21, 2002, 9:21 PM PDT
UTC: 2002-04-22 04:21:50 UTC
Depth: 9.7 km (6.0 mi), shallow
Epicenter: 36.773° N, 121.506° 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, 0.5 km in depth
Magnitude uncertainty: ±0.17
Depth from: From location
Station coverage gap: 36°
Stations used: 44

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 66 in the 30 days before it.

After

The first 60 of 176.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc51117841. Read Mon, Oct 5, 2026, 12:58 PM UTC.