M2.4 earthquake Central California

A magnitude 2.4 earthquake struck in Central California on Sun, Aug 21, 1977, 6:50 AM PDT (13:50 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 22 km NNE of Soledad, 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: 182 in the 60 days after this one and 77 in the 30 days before it.

The first 60 of 182.

From the USGS Earthquake Hazards Program and its partner networks, event nc1036435. Read Sun, Oct 4, 2026, 8:49 AM UTC.