California earthquakes

M2.6 earthquake 87 km WNW of Samoa, California

A magnitude 2.6 earthquake struck 87 km WNW of Samoa, California on Tue, Sep 18, 1979, 5:46 PM PDT (00:46 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.5 34 km WSW of Ferndale, California. This one was a foreshock.

Manila forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1979-09-19 00:46:28 UTC
Depth
4.9 km (3.0 mi), shallow
Epicenter
40.986° N, 125.198° 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 14.1 km horizontally, 17.0 km in depth
Depth from
From location
Station coverage gap
321°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 20 in the 30 days before it.

After

The first 60 of 99.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1047896. Read Thu, Oct 1, 2026, 4:22 AM UTC.