M1.7 earthquake 21 km NE of Soledad, California

A magnitude 1.7 earthquake struck 21 km NE of Soledad, California on Tue, Oct 24, 1978, 8:59 AM PDT (15:59 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.3 22 km NE of San Ardo, 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: 124 in the 60 days after this one and 62 in the 30 days before it.

The first 60 of 124.

From the USGS Earthquake Hazards Program and its partner networks, event nc1043001. Read Sat, Oct 3, 2026, 5:31 AM UTC.