M4.5 earthquake 52 km E of Machalí, Chile
A magnitude 4.5 earthquake struck 52 km E of Machalí, Chile on Tue, Jul 28, 1981, 3:17 AM GMT-4 (07:17 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.9 52 km E of Machalí, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1981-07-28 07:17:01 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 34.162° S, 70.078° W
- Region
- Chile
- 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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ez6. Read Tue, Sep 22, 2026, 7:22 AM UTC.