M3.4 earthquake 10 km NW of Pinnacles, CA

A magnitude 3.4 earthquake struck 10 km NW of Pinnacles, CA on Mon, Mar 2, 2026, 7:17 AM PST (15:17 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.6 1 km SE of Boulder Creek, CA. 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
3.42	ML, local (Richter)	Northern California Seismic System	Preferred · Final · ±0.141 · 88 stations
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.033 · 124 stations

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

28 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 113 in the 60 days after this one and 60 in the 30 days before it.

The first 60 of 113.

From the USGS Earthquake Hazards Program and its partner networks, event nc75321382 (also filed as us7000s1fl). Read Fri, Oct 2, 2026, 4:06 PM UTC.