M4.7 earthquake 9 km WNW of Valparaíso, Chile

A magnitude 4.7 earthquake struck 9 km WNW of Valparaíso, Chile on Mon, Mar 4, 1985, 4:45 AM GMT-3 (07:45 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.7 35 km WNW of Hacienda La Calera, Chile. 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 1.7 and up: 108 in the 60 days after this one and 41 in the 30 days before it.

The first 60 of 108.

From the USGS Earthquake Hazards Program and its partner networks, event usp0002cdr. Read Thu, Sep 24, 2026, 10:55 AM UTC.