M4.2 earthquake 47 km NNW of La Serena, Chile
A magnitude 4.2 earthquake struck 47 km NNW of La Serena, Chile on Mon, Apr 9, 1973, 7:53 AM GMT-4 (11:53 UTC), 49 km (30 mi) below the surface.
A larger quake followed: M4.7 35 km WSW of Coquimbo, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1973-04-09 11:53:53 UTC
- Depth
- 49.0 km (30.4 mi), shallow
- Epicenter
- 29.515° S, 71.453° 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.
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 usp00001b0. Read Tue, Sep 29, 2026, 12:35 AM UTC.