M1.8 earthquake 20km NE of Olancha, CA

A magnitude 1.8 earthquake struck 20km NE of Olancha, CA on Fri, Jan 17, 2003, 7:37 AM PST (15:37 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.9 5km NNW of Stovepipe Wells, CA. 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
1.82	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.396 · 8 stations
1.8	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: 158 in the 60 days after this one and 45 in the 30 days before it.

The first 60 of 158.

From the USGS Earthquake Hazards Program and its partner networks, event ci9880853 (also filed as nn00062063). Read Mon, Oct 5, 2026, 2:29 PM UTC.