M4.2 earthquake 69 km W of San Antonio, Chile
A magnitude 4.2 earthquake struck 69 km W of San Antonio, Chile on Sat, Mar 22, 1986, 6:05 AM GMT-4 (10:05 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.5 60 km SW of San Antonio, 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), light
- Local time
- UTC
- 1986-03-22 10:05:40 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 33.574° S, 72.354° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.560 km SW of San Antonio, Chile · 14798 days ago · 49 km deep · 59 km away
- 4.756 km WSW of Valparaíso, Chile · 14783 days ago · 33 km deep · 48 km away
- 4.549 km WSW of Valparaíso, Chile · 14779 days ago · 33 km deep · 47 km away
- 4.483 km WSW of Valparaíso, Chile · 14759 days ago · 33 km deep · 41 km away
- 4.265 km SW of San Antonio, Chile · 14756 days ago · 21 km deep · 54 km away
- 4.748 km SSW of San Antonio, Chile · 14756 days ago · 30 km deep · 76 km away
- 4.5127 km W of Valparaíso, Chile · 14755 days ago · 28 km deep · 73 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002s2f. Read Wed, Sep 30, 2026, 6:33 PM UTC.