M4.8 earthquake 92 km NE of Calama, Chile
A magnitude 4.8 earthquake struck 92 km NE of Calama, Chile on Mon, Jul 18, 1977, 4:08 AM GMT-4 (08:08 UTC), 78 km (48 mi) below the surface.
A larger quake followed: M4.9 55 km ENE of Calama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1977-07-18 08:08:18 UTC
- Depth
- 78.0 km (48.5 mi), intermediate-depth
- Epicenter
- 21.975° S, 68.190° 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
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.955 km ENE of Calama, Chile · 17948 days ago · 97 km deep · 38 km away
- 5.195 km ENE of Calama, Chile · 17931 days ago · 138 km deep · 6 km away
- 5.2145 km NNE of Calama, Chile · 17927 days ago · 99 km deep · 73 km away
- 4.853 km NNW of San Pedro de Atacama, Chile · 17905 days ago · 111 km deep · 55 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000psd. Read Tue, Sep 22, 2026, 3:12 AM UTC.