M1.5 earthquake 4km ESE of Vincent, CA

A magnitude 1.5 earthquake struck 4km ESE of Vincent, CA on Mon, Jun 30, 2003, 1:24 AM PDT (08:24 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.9 9km SW of Valencia, 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: 118 in the 60 days after this one and 81 in the 30 days before it.

The first 60 of 118.

From the USGS Earthquake Hazards Program and its partner networks, event ci13974832. Read Mon, Oct 5, 2026, 1:42 PM UTC.