M4.2 earthquake 34 km NNW of La Serena, Chile
A magnitude 4.2 earthquake struck 34 km NNW of La Serena, Chile on Fri, Mar 21, 1975, 2:24 AM GMT-4 (06:24 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.4 45 km NW of Coquimbo, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-03-21 06:24:16 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 29.630° S, 71.411° 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
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 13 in the 30 days before it.
After
- 4.216 km NW of Coquimbo, Chile · 18802 days ago · 51 km deep · 24 km away
- 4.445 km NW of Coquimbo, Chile · 18782 days ago · 17 km deep · 20 km away
Before
- 5.162 km WSW of Coquimbo, Chile · 18829 days ago · 19 km deep · 74 km away
- 4.66 km NNE of La Serena, Chile · 18832 days ago · 61 km deep · 32 km away
- 4.617 km SSE of Coquimbo, Chile · 18832 days ago · 62 km deep · 53 km away
- 5.38 km NNW of Coquimbo, Chile · 18832 days ago · 47 km deep · 29 km away
- 4.232 km NW of Coquimbo, Chile · 18833 days ago · 34 km deep · 24 km away
- 4.57 km SSE of Coquimbo, Chile · 18833 days ago · 58 km deep · 44 km away
- 4.534 km NNW of La Serena, Chile · 18833 days ago · 33 km deep · 7 km away
- 5.12 km ENE of Coquimbo, Chile · 18833 days ago · 59 km deep · 36 km away
- 5.128 km NW of Coquimbo, Chile · 18833 days ago · 26 km deep · 21 km away
- 5.215 km NW of La Serena, Chile · 18833 days ago · 51 km deep · 19 km away
- 5.327 km NNW of La Serena, Chile · 18833 days ago · 33 km deep · 8 km away
- 6.91 km N of Coquimbo, Chile · 18834 days ago · 4 km deep · 35 km away
- 4.664 km N of La Serena, Chile · 18835 days ago · 62 km deep · 38 km away
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000aax. Read Mon, Oct 5, 2026, 3:21 AM UTC.