M1.7 earthquake 9 km ESE of Prunedale, California

A magnitude 1.7 earthquake struck 9 km ESE of Prunedale, California on Mon, May 30, 1983, 1:06 AM PDT (08:06 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.9 26 km ESE of Big Sur, California. 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: 178 in the 60 days after this one and 88 in the 30 days before it.

The first 60 of 178.

From the USGS Earthquake Hazards Program and its partner networks, event nc1095770. Read Mon, Oct 5, 2026, 11:42 AM UTC.