M1.7 earthquake 20km W of Progreso, B.C., MX

A magnitude 1.7 earthquake struck 20km W of Progreso, B.C., MX on Thu, Jan 28, 1988, 4:43 AM PST (12:43 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.5 12km ESE of Ocotillo Wells, CA. 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: 185 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 185.

From the USGS Earthquake Hazards Program and its partner networks, event ci742164. Read Wed, Sep 23, 2026, 8:19 PM UTC.