M3.3 earthquake 18km W of Delta, B.C., MX

A magnitude 3.3 earthquake struck 18km W of Delta, B.C., MX on Wed, Dec 23, 2020, 2:22 PM PST (22:22 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.0 9km SW of Niland, 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
3.34	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.212 · 166 stations
3.1	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.057 · 40 stations

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak 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: 200 in the 60 days after this one and 71 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event ci39502175 (also filed as us6000d2c9). Read Sun, Oct 4, 2026, 1:46 PM UTC.