M3.1 earthquake 6km NE of Puebla, B.C., MX

A magnitude 3.1 earthquake struck 6km NE of Puebla, B.C., MX on Sat, Dec 4, 2021, 1:27 AM PST (09:27 UTC), 20 km (12 mi) below the surface.

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
3.13	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.142 · 73 stations
3.0	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.066 · 30 stations

7 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: 108 in the 60 days after this one and 59 in the 30 days before it.

The first 60 of 108.

From the USGS Earthquake Hazards Program and its partner networks, event ci39878559 (also filed as us6000g8zs). Read Sun, Oct 4, 2026, 3:33 PM UTC.