M4.5 earthquake 80 km WSW of Illapel, Chile
A magnitude 4.5 earthquake struck 80 km WSW of Illapel, Chile on Fri, Oct 12, 1973, 9:52 PM GMT-3 (00:52 UTC), 69 km (43 mi) below the surface.
A larger quake followed: M4.8 57 km NNW of Valparaíso, 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
- 1973-10-13 00:52:41 UTC
- Depth
- 69.0 km (42.9 mi), shallow
- Epicenter
- 31.979° S, 71.922° 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
- 9
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 12 in the 30 days before it.
After
- 4.147 km NW of Valparaíso, Chile · 19324 days ago · 27 km deep · 83 km away
- 4.857 km NNW of Valparaíso, Chile · 19311 days ago · 33 km deep · 64 km away
- 4.634 km SW of Salamanca, Chile · 19303 days ago · 97 km deep · 64 km away
Before
- 4.786 km WSW of Illapel, Chile · 19340 days ago · 46 km deep · 24 km away
- 5.258 km W of Illapel, Chile · 19341 days ago · 39 km deep · 39 km away
- 3.996 km W of Illapel, Chile · 19344 days ago · 33 km deep · 34 km away
- 4.151 km WNW of Illapel, Chile · 19344 days ago · 33 km deep · 59 km away
- 3.952 km W of Illapel, Chile · 19344 days ago · 50 km deep · 35 km away
- 4.455 km W of Illapel, Chile · 19344 days ago · 33 km deep · 32 km away
- 5.049 km W of Illapel, Chile · 19344 days ago · 46 km deep · 40 km away
- 4.543 km NNW of Valparaíso, Chile · 19345 days ago · 33 km deep · 80 km away
- 4.329 km NNW of Valparaíso, Chile · 19345 days ago · 33 km deep · 92 km away
- 6.724 km WSW of La Ligua, Chile · 19345 days ago · 33 km deep · 73 km away
- 4.643 km W of La Ligua, Chile · 19352 days ago · 42 km deep · 64 km away
- 5.01 km NW of Illapel, Chile · 19358 days ago · 39 km deep · 80 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003tm. Read Tue, Sep 22, 2026, 2:53 PM UTC.