M1.8 earthquake 3 km ESE of Aromas, California

A magnitude 1.8 earthquake struck 3 km ESE of Aromas, California on Tue, Dec 25, 1979, 8:02 AM PST (16:02 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.2 11 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: 183 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 183.

From the USGS Earthquake Hazards Program and its partner networks, event nc1049538. Read Tue, Sep 22, 2026, 8:44 PM UTC.