M4.1 earthquake 51 km WNW of Illapel, Chile
A magnitude 4.1 earthquake struck 51 km WNW of Illapel, Chile on Sat, Oct 6, 1973, 9:23 AM GMT-3 (12:23 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 58 km W of Illapel, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1973-10-06 12:23:38 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 31.489° S, 71.683° 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
- 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: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.996 km W of Illapel, Chile · 19354 days ago · 33 km deep · 55 km away
- 5.258 km W of Illapel, Chile · 19351 days ago · 39 km deep · 20 km away
- 4.786 km WSW of Illapel, Chile · 19351 days ago · 46 km deep · 49 km away
- 4.580 km WSW of Illapel, Chile · 19348 days ago · 69 km deep · 59 km away
- 4.634 km SW of Salamanca, Chile · 19313 days ago · 97 km deep · 69 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003qr. Read Fri, Oct 2, 2026, 11:28 PM UTC.