M3.5 earthquake 10km NE of Delta, B.C., MX

A magnitude 3.5 earthquake struck 10km NE of Delta, B.C., MX on Fri, Jan 4, 2002, 11:29 AM PST (19:29 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M5.7 13km WSW of Delta, B.C., MX. 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
3.51	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.222 · 35 stations
3.8	Md, duration	USGS National Earthquake Information Center	Reviewed

The USGS’s account of the effects of this earthquake.

Felt at Mexicali and in the Mexicali Valley. Also felt at San Luis Rio Colorado, Sonora.

From the USGS event page for ci9743989. U.S. Geological Survey text and figures are in the public domain.

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: at least 202 in the 60 days after this one and 158 in the 30 days before it.

The first 60 of at least 202.

From the USGS Earthquake Hazards Program and its partner networks, event ci9743989 (also filed as usp000avu7). Read Sun, Oct 4, 2026, 7:59 PM UTC.