M1.8 earthquake 19km SSE of Carpinteria, CA

A magnitude 1.8 earthquake struck 19km SSE of Carpinteria, CA on Fri, Mar 31, 1978, 8:27 AM PST (16:27 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.9 28km S of Port Hueneme, 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: 119 in the 60 days after this one and 81 in the 30 days before it.

The first 60 of 119.

From the USGS Earthquake Hazards Program and its partner networks, event ci3338490. Read Thu, Oct 1, 2026, 9:02 PM UTC.