M4.9 earthquake Antofagasta, Chile
A magnitude 4.9 earthquake struck in Antofagasta, Chile on Sat, Oct 26, 1985, 10:31 PM GMT-3 (01:31 UTC), 87 km (54 mi) below the surface.
A larger quake followed: M5.0 109 km ENE of Antofagasta, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-10-27 01:31:19 UTC
- Depth
- 87.3 km (54.2 mi), intermediate-depth
- Epicenter
- 23.927° S, 69.011° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (III) at Antofagasta.
From the USGS event page for usp0002m5r. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.0109 km ENE of Antofagasta, Chile · 14948 days ago · 87 km deep · 62 km away
- 4.9114 km SSW of Calama, Chile · 14933 days ago · 92 km deep · 60 km away
- 4.476 km S of San Pedro de Atacama, Chile · 14915 days ago · 153 km deep · 88 km away
- 4.0101 km SSW of San Pedro de Atacama, Chile · 14892 days ago · 126 km deep · 43 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002m5r. Read Fri, Oct 2, 2026, 4:24 AM UTC.