M3.2 earthquake 14 km NE of Proberta, California

A magnitude 3.2 earthquake struck 14 km NE of Proberta, California on Sun, Feb 12, 1978, 10:08 PM PST (06:08 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M3.5 38 km NW of Paskenta, California. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.2	ML, local (Richter)	Northern California Seismic System	Preferred · Final · 0 stations
3.3	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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: 19 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event nc1038926 (also filed as usp0000syb). Read Sun, Oct 4, 2026, 12:41 PM UTC.