M4.8 earthquake 31 km SW of Valparaíso, Chile
A magnitude 4.8 earthquake struck 31 km SW of Valparaíso, Chile on Sat, Nov 17, 1973, 4:28 PM GMT-3 (19:28 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 24 km WSW 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
- 4.8 (mb), light
- Local time
- UTC
- 1973-11-17 19:28:39 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 33.243° S, 71.853° 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
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 3.97 km SSW of Lampa, Chile · 19301 days ago · 70 km deep · 88 km away
- 5.124 km WSW of Valparaíso, Chile · 19258 days ago · 24 km deep · 16 km away
- 4.955 km W of Valparaíso, Chile · 19251 days ago · 26 km deep · 42 km away
Before
- 3.948 km WSW of Valparaíso, Chile · 19309 days ago · 24 km deep · 26 km away
- 4.857 km NNW of Valparaíso, Chile · 19318 days ago · 33 km deep · 77 km away
- 4.544 km W of Valparaíso, Chile · 19326 days ago · 24 km deep · 30 km away
- 4.147 km NW of Valparaíso, Chile · 19330 days ago · 27 km deep · 59 km away
- 4.933 km SW of Valparaíso, Chile · 19337 days ago · 38 km deep · 5 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000046e. Read Tue, Sep 29, 2026, 9:36 AM UTC.