Mexico earthquakes

M1.7 earthquake 5km NW of Progreso, B.C., MX

A magnitude 1.7 earthquake struck 5km NW of Progreso, B.C., MX on Sat, Dec 28, 1985, 2:59 PM PST (22:59 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M1.8 8km SW of Holtville, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.7 (mc), micro
Local time
UTC
1985-12-28 22:59:47 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
32.617° N, 115.616° W
Region
Mexico
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
From location
Station coverage gap
202°, poorly surrounded by stations
Stations used
0

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 159 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 159.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci111800. Read Wed, Sep 23, 2026, 4:53 PM UTC.