M4.1 earthquake 29 km NNW of Valparaíso, Chile
A magnitude 4.1 earthquake struck 29 km NNW of Valparaíso, Chile on Tue, Sep 12, 1978, 9:12 AM GMT-4 (13:12 UTC), 51 km (32 mi) below the surface.
A larger quake followed: M4.9 34 km N 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
- 4.1 (mb), light
- Local time
- UTC
- 1978-09-12 13:12:18 UTC
- Depth
- 51.0 km (31.7 mi), shallow
- Epicenter
- 32.782° S, 71.708° 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
- 13
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 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 usp0000wh1. Read Tue, Sep 22, 2026, 9:39 PM UTC.