M4.5 earthquake 44 km W of Valparaíso, Chile
A magnitude 4.5 earthquake struck 44 km W of Valparaíso, Chile on Wed, Oct 31, 1973, 3:58 AM GMT-3 (06:58 UTC), 24 km (15 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
- 1973-10-31 06:58:27 UTC
- Depth
- 24.0 km (14.9 mi), shallow
- Epicenter
- 33.077° S, 72.101° 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
- 15
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 31 in the 30 days before it.
After
- 4.857 km NNW of Valparaíso, Chile · 19317 days ago · 33 km deep · 63 km away
- 3.948 km WSW of Valparaíso, Chile · 19308 days ago · 24 km deep · 11 km away
- 4.831 km SW of Valparaíso, Chile · 19308 days ago · 33 km deep · 30 km away
Before
- 4.147 km NW of Valparaíso, Chile · 19330 days ago · 27 km deep · 40 km away
- 4.933 km SW of Valparaíso, Chile · 19336 days ago · 38 km deep · 25 km away
- 5.134 km WSW of Valparaíso, Chile · 19345 days ago · 29 km deep · 12 km away
- 4.540 km SW of Valparaíso, Chile · 19346 days ago · 46 km deep · 22 km away
- 4.055 km W of Valparaíso, Chile · 19349 days ago · 33 km deep · 11 km away
- 4.259 km WSW of Valparaíso, Chile · 19350 days ago · 33 km deep · 18 km away
- 4.348 km WSW of Valparaíso, Chile · 19350 days ago · 33 km deep · 17 km away
- 5.045 km W of Valparaíso, Chile · 19351 days ago · 21 km deep · 2 km away
- 4.624 km WNW of Valparaíso, Chile · 19351 days ago · 33 km deep · 26 km away
- 4.741 km WSW of Valparaíso, Chile · 19351 days ago · 35 km deep · 8 km away
- 4.942 km W of Valparaíso, Chile · 19351 days ago · 29 km deep · 1 km away
- 4.845 km WSW of Valparaíso, Chile · 19351 days ago · 23 km deep · 11 km away
- 4.554 km WSW of Valparaíso, Chile · 19351 days ago · 33 km deep · 13 km away
- 4.435 km WSW of Valparaíso, Chile · 19351 days ago · 33 km deep · 10 km away
- 4.453 km W of Valparaíso, Chile · 19351 days ago · 33 km deep · 10 km away
- 4.543 km NNW of Valparaíso, Chile · 19351 days ago · 33 km deep · 48 km away
- 4.458 km W of Cartagena, Chile · 19351 days ago · 33 km deep · 44 km away
- 4.7Off the coast of Valparaiso, Chile · 19351 days ago · 33 km deep · 10 km away
- 4.335 km WSW of Valparaíso, Chile · 19351 days ago · 33 km deep · 11 km away
- 4.444 km W of Valparaíso, Chile · 19351 days ago · 33 km deep · 3 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000409. Read Mon, Sep 28, 2026, 6:33 PM UTC.