M3.1 earthquake 44km SSW of Progreso, B.C., MX

A magnitude 3.1 earthquake struck 44km SSW of Progreso, B.C., MX on Tue, May 6, 2003, 4:52 PM PDT (23:52 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.2 4km SSW of Brawley, 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
3.11	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · ±0.314 · 91 stations
3.1	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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

no people dead or missing; no people injured; no buildings damaged or destroyed

From the USGS event page for ci13961740. 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: 199 in the 60 days after this one and 32 in the 30 days before it.

The first 60 of 199.

From the USGS Earthquake Hazards Program and its partner networks, event ci13961740 (also filed as usp000bwrd). Read Mon, Oct 5, 2026, 7:16 AM UTC.