M3.3 earthquake 33km S of Progreso, B.C., MX

A magnitude 3.3 earthquake struck 33km S of Progreso, B.C., MX on Wed, Aug 23, 1933, 5:21 PM GMT-8 (01:21 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.6 10km E of Mexicali, B.C., MX. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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: 10 in the 60 days after this one and 3 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ci3361185. Read Wed, Sep 23, 2026, 7:09 AM UTC.