M3.9 earthquake 89 km NW of Vallenar, Chile
A magnitude 3.9 earthquake struck 89 km NW of Vallenar, Chile on Mon, Mar 20, 1978, 7:50 PM GMT-4 (23:50 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (Ms, surface-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-03-20 23:50:34 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 28.060° S, 71.464° 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 1.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000tgb. Read Fri, Oct 2, 2026, 6:18 PM UTC.