California earthquakes

M1.8 earthquake 1 km SE of Interlaken, California

A magnitude 1.8 earthquake struck 1 km SE of Interlaken, California on Thu, Jan 25, 1990, 12:31 PM PST (20:31 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M4.1 4 km E of Interlaken, 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-01-25 20:31:25 UTC
Depth
8.6 km (5.3 mi), shallow
Epicenter
36.938° N, 121.722° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
82°
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 185 in the 60 days after this one and 188 in the 30 days before it.

After

The first 60 of 185.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc151285. Read Sat, Oct 3, 2026, 4:41 PM UTC.