M2.3 earthquake 3km NNW of Baldwin Park, CA

A magnitude 2.3 earthquake struck 3km NNW of Baldwin Park, CA on Mon, Mar 4, 1985, 5:05 PM PST (01:05 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.4 12km WNW of Malibu, CA. This one was a foreshock.

Map

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

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: 169 in the 60 days after this one and 85 in the 30 days before it.

The first 60 of 169.

From the USGS Earthquake Hazards Program and its partner networks, event ci62023. Read Sat, Oct 3, 2026, 1:51 PM UTC.