California earthquakes

M1.6 earthquake 5km WNW of Walker, CA

A magnitude 1.6 earthquake struck 5km WNW of Walker, CA on Sun, Nov 21, 2021, 1:19 AM PST (09:19 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M2.9 6km WNW of Walker, CA. This one was a foreshock.

Walker 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-11-21 09:19:23 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
38.540° N, 119.531° W
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
1.62Md, durationNorthern California Seismic SystemPreferred · Final · ±0.178 · 16 stations
1.4ML, local (Richter)Nevada Seismological LaboratoryPreliminary · ±0.21 · 9 stations

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, 0.3 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
66°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 88 in the 60 days after this one and 94 in the 30 days before it.

After

The first 60 of 88.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73655865 (also filed as nn00828570). Read Sun, Oct 4, 2026, 12:24 AM UTC.