M2.3 earthquake 22 km SSW of Walker, California

A magnitude 2.3 earthquake struck 22 km SSW of Walker, California on Sat, Aug 24, 2002, 9:18 PM PDT (04:18 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.9 11 km NE of Mono City, California. This one was a foreshock.

Map

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

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.	Scale	Computed by	Notes
2.25	Md, duration	Northern California Seismic System	Preferred · Final · ±0.03 · 3 stations
1.4	ML, local (Richter)	Nevada Seismological Laboratory	Reviewed

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 25 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event nc21242087 (also filed as nn00055169). Read Mon, Oct 5, 2026, 12:45 PM UTC.