California earthquakes

M2.5 earthquake Central California

A magnitude 2.5 earthquake struck in Central California on Sat, Apr 15, 1989, 11:50 PM PDT (06:50 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.8 4 km SSE 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
2.5 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1989-04-16 06:50:24 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
36.468° N, 120.313° W
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 0.7 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
238°, poorly surrounded by stations
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 106 in the 60 days after this one and 49 in the 30 days before it.

After

The first 60 of 106.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc134749 (also filed as ci1026846). Read Thu, Oct 1, 2026, 8:14 PM UTC.