M3.0 earthquake 18 km ENE of Angwin, California

A magnitude 3.0 earthquake struck 18 km ENE of Angwin, California on Thu, Mar 29, 1990, 9:44 PM PST (05:44 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.4 3 km SSE of North Gate, 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
3.0	ML, local (Richter)	Northern California Seismic System	Preferred · Final · 0 stations
3.3	ML, local (Richter)	USGS National Earthquake Information Center	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: 197 in the 60 days after this one and 107 in the 30 days before it.

The first 60 of 197.

From the USGS Earthquake Hazards Program and its partner networks, event nc155002 (also filed as usp0004785). Read Sun, Oct 4, 2026, 9:03 AM UTC.